Need Wheel/Tire Advice

Shocks, springs, sway bars, coliovers, bushings, brakes, wheels, tires - This is the place to discuss G-Series suspension modifications!
consultant1027
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Need Wheel/Tire Advice

Postby consultant1027 » Tue May 18, 2010 9:18 pm

I'm thinking of picking up an 09 G37x Sedan. Would greatly appreciate if someone could give me the quick scoop on wheels/tires.

I see the sport option wheels are 225/50-R18. That's still pretty high profile tires for a sport sedan. Car will be driven in the Northwest where we get a few inches of snow every now and they sand the crap out of my neighborhood when we do get it, but nothing like the MidWest or Northeast gets. Streets are okay condition most places I drive (I drive 60%+ freeway).

I'm not going to lower the car. Those days are over. But I want to maintain good ride quality. Don't want separate wheel/tire set for summer/winter. The 17" wheels and tires are just too much of a eye sore to ignore on an otherwise nice looking car.

Should I go 18" or 19". I know on the AWD wheels and tires have to be same size. I think the 19" Infiniti Sport Wheels are staggered though as they are only available on the Coupe S or Convertible S. If I go aftermarket, what kind of offset will I need, inbetween +20 and +30? I believe the stock offset is about +40? Not sure what the clearance is between the wheel and brakes on the standard brakes is. I'm guessing on 19" I'd need 19x8.5 with offset between +20 and +30 ?? 19" tire size seems best at 255/40-19 as that would fill the wheel wells slightly better with only +0.5% speedo error. Or is 19 going to be too big for my use or will the 255 stick out of the fenders slightly?

Thanks in advance for any advice.


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Re: Need Wheel/Tire Advice

Postby RED_DET » Tue May 18, 2010 11:01 pm

Read my sticky on aftermarket/oem specs. If you still have some confusion, report back.

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Re: Need Wheel/Tire Advice

Postby consultant1027 » Wed May 19, 2010 6:35 am

I did read the sticky. The sizes for the G37 were not correct but I think that is because your sticky is for the Coupe sizes and not the sedan. The correct sedan sizes are 17x7.5 or 18x7.5. But from your sticky it looks like I'd be okay with 19x8.5 as long as the offset is in that 30-35 range?

I guess I need to look at some photos. I imagine lots of people but 20" wheels on this car so 19" is probably fine for all season driving. Plus I won't have the sport suspension so I don't have to worry about the wheels making the ride to harsh. I'd stick with 18" if I had the sport suspension. Just too stiff for in-city streets.

If I'm lucky enough to find a G37X-S, I'd probably just live with the 18" and avoid the hassle and cost of going only one inch larger. I'd feel more comfortable taking the car occasionally on dirt roads to a hiking trailhead (but I do that very rarely and the roads are pretty good.)

I think I just need to take a look at some pics of different 19" wheel/tire options. Anyone running 255/40-19? I suppose I could live with 245/40-19 as the diameter is only 0.2 inches smaller, but I'd prefer 0.1 inch larger if the 255 won't stick out at all from the fenders on 19x8.5's with 30-35 offset.

I see they are putting 225/45 on the stock 19" sport wheels on the front for the convertible using 19x8.5 rims. So maybe 255 will be pushing it as the rears they are using 245 on 19x9.

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Re: Need Wheel/Tire Advice

Postby RED_DET » Wed May 19, 2010 9:17 am

1st GEN G35 Sedan OEM Wheel Specs
Sport Model (2003-2004) & Non Sport Model
Front & Rear: 17x7 +45mm offset
Weight: 23.2lbs

Sport Model (2005-2006)
Front & Rear: 18x7.5 +45mm offset

Non Sport Model (2005-2006)
Front & Rear : 17x7 +45mm offset

Commonly used after-market offsets:
All first Gen years
Front width: 8.5" +29-30mm offset
Rear width: 9.5" +35-40mm offset
Rear width: 10" +42-45mm offset

245 series front tire and 265-275 rear tire are most commonly used

2nd GEN G35 Sedan OEM Wheel Specs

2007-2008 17" wheels
Front & Rear -17"x7.5" +45mm offset

2007-2008 18" sport wheels
Front: 18x7.5 +45mm offset (appx 23.7lbs)
Rear: 18x8.5 +50mm offset (appx 22.4lbs)

Commonly used after-market offsets:
*See 1st GEN G35 Sedan after-market offsets*

***NOTE PERTAINING TO AWD SEDANS FOR EITHER GENERATION*** (IT IS NOT RECOMMENDED TO RUN STAGGERED WHEEL SETUPS AS IT MAY THROW OFF THE VDC)
2nd Gen G35 Wheel specs are also relevant to the G37 sedan, same chassis code, same wheel specs. I guess I need to update that, but I assumed folks were aware of that information.

If you go with 19's, tires are more expensive and you will have to run a shorter profile to keep within the oem diameter specification, so your ride will suffer some. 19" tires are also more expensive than 18's or 20's. If you are stuck with going with 19's, go with 19x9 30-35 offset all the way around. That way you can run a 255 wide tire. You can also go 18x9 30-35 offset all the way around and run a 255 tire as well. In order to get the correct tire size be sure to use the tire size calculator. In your case you may want to go with a diameter that is taller than oem since you don't plan on lowering the car and surely don't want to add any more fender gap. I would stay within 1-2% of oem diameter difference.

On the g37 coupe wheels, they should be using wider tires, a 245 would be ideal up front and 265 would be ideal for the rear.

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Re: Need Wheel/Tire Advice

Postby consultant1027 » Wed May 19, 2010 10:32 am

Well I suppose I can calculate how far the tires will stick out.

On stock 18" with 45mm offset and 225 tires, that would put the outer edge of the tire at 157.5mm from centerline correct?

I'll assume the stock tires are at least 1/2" inside the fender edge or 10mm, so I should be okay with a tire that goes up to 177mm from centerline out. I think even 45mm offest with 19x8.5 would be fine as the tire would stick out only 15mm more so even 40mm offset should work?

What about the tire pressure sensors? How does those work with aftermarket wheels?

Ya, 255/40-19 tires are NOT cheap. Most of the used wheel/tire sets I saw on EBAY are not using 255's so I'll most likely have to buy the wheels and tires separate. I agree, if I go 19 or 18 for that matter, I am NOT increasing wheel/fender gap. All the Infinity 19" wheels sets are staggered which won't work for an X. I'd have to find 4 of the front 19" wheels or go aftermarket. I really prefer the stock Infiniti wheels. I think it maximizes resale value, you know fitment is okay, and most of the aftermarket rims I've seen are too flashy for my tastes. I'll have to look around.

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Re: Need Wheel/Tire Advice

Postby consultant1027 » Wed May 19, 2010 10:48 am

Well, just from this photo I found of 20" on an X, it tells me no problem with 19's as there is still some good amount of profile on the 20's so 19's should be fine for all-season. They did mention for the AWD you want offset of 40, but my gut is with 255's you wouldn't want to go over 40?

Image

I don't like the fact he had to get aftermarket sensors because the stock ones wouldn't fit. Wonder what the chances of that are on 19"?

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Re: Need Wheel/Tire Advice

Postby RED_DET » Wed May 19, 2010 6:05 pm

I would run at least a 35mm offset on 8.5's. 30mm would be optimal and look the best as tucked in wheels look like sh&t. Dont' make things hard on yourself, use the wheel offset caluclator to determine how much less area there will be or how much more the wheels will extend when comparing offsets to oem. 99% of all the wheels I have seen accomodate oem TPMS. I'm not a fan of 20's and especially non brand name, which is probably the issue why the oem sensors didn't work in those 20's pictured. Trust me if I tell you an offset will work as I don't want to sound conceited, but I'm an offset guru. I run 8.5" wheels up front with 20mm offset and 9.5" wheels out back with 35mm offset on my 1st gen sedan and the 2nd gen sedan has more fender room. My tires are 245/40/18 & 275/40/18. Now granted the car is lowered which helps the appearance, but the offsets I told you will work and look great. The AWD issue has more than just offset, but making sure the widths are same front and rear as well. Meaning no staggered setups, period. If you go 19, your profile will have to be a 35 to run a 255 wide tire. If you go with 18's, run a 255/40. You can also run a 245/40/18 but that size is shorter than oem specs, which will enhance fender gap. It is going to be hard to pull off the after market wheel look without dropping the vehicle some, but can be done.

consultant1027
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Re: Need Wheel/Tire Advice

Postby consultant1027 » Wed May 19, 2010 11:06 pm

Stock tire size on a G37x with 18" OEM rims is 225/50-18. That is a diameter of 26.9 inches. 255/35-19's would have a diameter of only 26.0 inches and the speedo would be 3.1% too fast. 255/40-19's would have a diameter of 27.0 inches and speedo would only be 0.6% slow and fender gap would be the least.

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Re: Need Wheel/Tire Advice

Postby RED_DET » Wed May 19, 2010 11:12 pm

Well there you go, 255/40/19 and be done with it.

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Re: Need Wheel/Tire Advice

Postby CantonG35 » Thu May 20, 2010 7:38 am

Nice to finally find a good infiniti site with some experts around. I have an '06 G35 sedan that needs some more aggressive looking wheels/tires but am dismayed at the cost of new tpms. I plan on keeping the OEM wheels/tires and popping them back on at resale time, as I've found that when I try to sell my cars with aftermarket rims a high proportion of buyers prefer the bland original look anyway. My question is, can I just install wheels w/o the sensors and deal with a simple warning light, or is it going to cause other problems? I had a truck where I did this and honestly it was no big deal. The dash had so many lights on anyway (toyota) I never even noticed it. It would flash for a minute, then turn on for good.

I've benefited from tpms's once, with a bmw E90 that used the (I think vastly superior) method of the stability control type tpms. No wheel sensors required. The tire looked fine, but was down 15 lbs due to a puncture. So that system seems to work well. But I could replace a couple of tires for the cost of the sensors, so I'm not that worried. Heck, I drove cars for years w/o the sensors and never ruined a tire or wheel.

I just need to know if my car will be annoying w/o the sensors installed.

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Re: Need Wheel/Tire Advice

Postby audtatious » Thu May 20, 2010 8:08 am

You will just have to deal with the TPMS light being on all the time.

That being said, I did see one guy who was able to get the light to go off. He took some 3" PVC pipe and two 3" caps, sealed one end of the pipe with a cap, drilled a 3/8" hole in the other and inserted a valve stem. He then wrapped the factory TPMS sensors, put them in the pipe and sealed the open end with the other cap. Finally he added air pressure to 35psi and tossed it in his trunk. Problem solved.

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Re: Need Wheel/Tire Advice

Postby consultant1027 » Thu May 20, 2010 9:13 am

I thought only certain wheel/tire combos would not be compatible with the OEM TPMS? Are we assuming some certain size of wheel/tire? I'm guessing 20" won't be compatible. But obviously OEM 19" Infinity wheels (ala the Sport option on coupe/convertible) would be. Would not most 19" wheel/tire combos be okay with factory TPMS or can it not be transferred from the OEM wheels?

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Re: Need Wheel/Tire Advice

Postby RED_DET » Thu May 20, 2010 10:09 am

You can remove the TPMS and use them in a different will if they will fit no matter what size. I have seen 20's where the TPMS sensors still worked. Just depends on the design of the wheel and how the valve stem is positioned. Now on another note Canton asked about, yes you will have to just deal with the light being on, but it will not cause any other issues.

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Re: Need Wheel/Tire Advice

Postby jereyn » Sat Feb 19, 2011 7:28 am

Hello,
I purchased a 2003 G35 Coupe with the Brembo package last year. It currently has 20" Wheels and I would like more rubber on the road. I have read through many of the posts regarding 19" wheels being very expensive but clearing the calipers. Is there an 18" wheel out there capable of clearing the calipers? Thank you for any help!

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Re: Need Wheel/Tire Advice

Postby Mudgen » Sat Feb 26, 2011 8:23 pm

audtatious wrote: That being said, I did see one guy who was able to get the light to go off. He took some 3" PVC pipe and two 3" caps, sealed one end of the pipe with a cap, drilled a 3/8" hole in the other and inserted a valve stem. He then wrapped the factory TPMS sensors, put them in the pipe and sealed the open end with the other cap. Finally he added air pressure to 35psi and tossed it in his trunk. Problem solved.
Dude, you're a hoot. Not saying it didn't happen.

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Re: Need Wheel/Tire Advice

Postby Mr.G.Cruze35 » Tue Aug 02, 2016 8:58 pm

So bought 18x9.5 +15 and what would be the best tires size for my G35 Coupe? My friend said to get 255, 40 in the front and 275 40 in the rear. Does that sound good? I would have lower my car right? Or it will look funny. Please help? Need mote opinions.

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Re: Need Wheel/Tire Advice

Postby RED_DET » Wed Aug 03, 2016 7:19 am

http://www.1010tires.com. Under Tires menu, use the tire size calculator under learn. Input OEM sizes and compare them to the size you want to buy. If its off more than 3% in diameter, you will get a warning on screen and I suggest you run a different size if that happens.

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Re: Need Wheel/Tire Advice

Postby Boulders » Thu May 18, 2017 11:22 pm

Greetings I read through the sticky and didn't see the info I was looking for. so I have a 13 IPL coupe stock wheels for now 19x8.5 and 19x9
what size of tire can I go up to on these wheels?? I need more rubber on the road. I was thinking 245 40's fronts and 265 40's on the rear.
would this fit and not rub.

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Re: Need Wheel/Tire Advice

Postby RED_DET » Fri May 19, 2017 6:26 am

The answer was in the post above yours... which will require you to use the calculator to determine the correct tire size. 245/265 will work if you have the correct aspect ratio.

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Re: Need Wheel/Tire Advice

Postby 1taichi » Tue Aug 08, 2017 10:56 am

Does anybody know if you can put 19x9 with 245/45/19 on the front on 2015 q60 awd with sport package

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Re: Need Wheel/Tire Advice

Postby RED_DET » Tue Aug 08, 2017 2:19 pm

The answer to your question is 3 posts above yours..

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Re: Need Wheel/Tire Advice

Postby 1taichi » Wed Aug 09, 2017 12:22 pm

Hi Thanks
Went to 1010 it says rim diameter is .96 less So it less then 3% difference
Dealer sent me wrong wheels should be 8.5 all around with 43 offset
They sent me 4 rear wheels made for a rwd car with 45 offset They won't exchange them
They sent correct tires 225/45/19 But they won't fit wheels
I think its cheaper to replace tires then wheels
The new wheels will be 9mm closer to suspension I am afraid of them rubbing
Someone told me to use spacers Any advise about that

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Re: Need Wheel/Tire Advice

Postby RED_DET » Wed Aug 09, 2017 12:48 pm

The 19x9 with +45 offset will fit your vehicle. If those wheels fit RWD car, they will also fit your car. RWD and AWD cars have the same chassis.

I would suggest a 245/40/19 on that wheel.

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Re: Need Wheel/Tire Advice

Postby jaytee » Mon Aug 28, 2017 11:14 am

I'm looking for winter tires and rims for my 2010
G37X coupe. Will Q50 225/55r18 wheels and rims work? I currently have stock 18in 225/50r on the car.

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Re: Need Wheel/Tire Advice

Postby Ajb03 » Wed Oct 04, 2017 4:58 am

for my 2016 Nissan Altima.

Will 16’ maxima SR OEM 19” rims fit? what tires would be perfect for it so it doesn’t rub?

or should I buy rohana RC10 19” with 19x18.5 front and 9.5 back w/ 30+ / 40+ ? tires are 215/35 and 225/35.

Really debating.. what fit perfect.

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Re: Need Wheel/Tire Advice

Postby RED_DET » Wed Oct 04, 2017 5:30 am

Welcome, you may want to post this question in the Altima forum.


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