Infiniti G35 sedan 17" wheels work on Q?

[szh]

Hi, all.

Are the 17" Infiniti G35 sedan wheels strong enough for a 1995 Q45? They appear to have the same 45mm offset - unlike the ones for the 2 dr G35 coupe!

Z

[Q45tech]

I would think so since the weight on the front Q is only 12% more per wheel. The lack of machined lip for clip on weights is a disadvantage but most seem to live with it.

[deesolballs]

Check out this thread.

http://www.nissaninfiniticlub....heels

[szh]

I would think so since the weight on the front Q is only 12% more per wheel. The lack of machined lip for clip on weights is a disadvantage but most seem to live with it.

Very interesting! Does the inner "lip" have a space for clip-on weights perhaps? If not, how do these wheels/tires get balanced?

Z

[szh]

Check out this thread.

http://www.nissaninfiniticlub....heels

Thanks much! Does look like it would work - as long I just use the wheels and punt the RSA tires (in favor of my personal favorites: Firestone SZ50EP's!)

Z

[szh]

Allright! I got my 17" Infiniti G35 rims on their way to me in a few weeks! I hope to get the Firestone 245/45-17 Firestone SZ50EP's ordered at that time too.

It looks like my 95Q is going to get new shoes sometime soon!

Z

[szh]

Hi, all.

I am getting a set of 2002 Infiniti G35 rims (the sedan version at 17x7 with 45mm ofset) for my Q. I intend to also get the Firestone SZ50EP's in a 245/45-17 size for them.

At http://www.tirerack.com, the recommended rim width range for this size tire is shown as 7.5" - 9". I am of the belief that a 7" rim should work too. Is this okay to do? (Keeping my fingers crossed for the experts here to agree with my novice beliefs!)

Z

[AZhitman]

245's fit on my stock 99Q 16x7" rims nicely.

Others have gone 255 with no problem.

[Q45tech]

Since the 245/45/17 is speced for an 8" wheel width a narrower wheel will tend to curl up the tread edges, THEREFORE the speced 7.4" tread width might be reduced to 7.1-7.2"......roughly the same as a SZ50 225/60/15 on a 6.5" wheel [7.0" tread width].............what has been gained by the excercise and expense.255.50/16 with 16 x8 " wheels is 1687 pounds strong and has a 8.1 " tread width.

Each tire model in each brand is different you must study tread width vs wheel width vs load rating to decide if you are getting your money's worth!Both the 225/60/15 and the 245/45/17 are rated at 1521 pounds at 44psi.........nothing gained here either!

Sure the side wall is stiffer - so steering feels less mushy but the grip will be exactly the same!

[szh]

Hi, AZHitman.

245's fit on my stock 99Q 16x7" rims nicely.

Others have gone 255 with no problem.

Thanks for the information and reassurance! Takes a load off my mind.

However, based on what you said, I looked at the Tirerack info again, and think I should not go for the 255/40 or the 255/45 in the Firestone SZ0EP, since they are not load rated for the Q. They appear to be 94Z or 93Z, so the 245/45 at 95Z (1521 lbs) is better, I would think! Would you agree?

Z

[AZhitman]

Agreed - Props to you for doing your homework.

Interesting how load ratings for the same sizes can vary so greatly across brands, also.

[szh]

Hi, Dennis.

Since the 245/45/17 is speced for an 8" wheel width a narrower wheel will tend to curl up the tread edges, THEREFORE the speced 7.4" tread width might be reduced to 7.1-7.2"......roughly the same as a SZ50 225/60/15 on a 6.5" wheel [7.0" tread width].............what has been gained by the excercise and expense.255.50/16 with 16 x8 " wheels is 1687 pounds strong and has a 8.1 " tread width.

Each tire model in each brand is different you must study tread width vs wheel width vs load rating to decide if you are getting your money's worth!Both the 225/60/15 and the 245/45/17 are rated at 1521 pounds at 44psi.........nothing gained here either!

Sure the side wall is stiffer - so steering feels less mushy but the grip will be exactly the same!

Thanks for your input! I had looked at the tread width's (compared both tire sze throughly yesterday), and the difference between my present 225/60-15 and the 245/45-17 did not seem to matter much, so I was not expecting too much of an increase in grip. But I have to admit that I did not think about the possible reduction from 7.4" tread width due to the narrower rim. At least, it will still be slightly above the 7.0" of the 225/60, not worse!

You are very correct about the excellent 255/50-16 tire! I had gone looking for an Infiniti 16" rim (wanted to stick with OEM) but did not find one anywhere (in NICO Buy sections or on eBay). So I decided to try out the G35 17" wheels. This is a six-spoke sedan version in a 45mm offset---used, but in excellent condition. I liked the look much better than the current 15" Infiniti rims I have now, so figured the cost would be acceptable!

I also figured that the 245/45-17 would be the good match in this case even though the tires (my current 15 and the new 17) looked dimensionally similar at Tirerack. Of course, a stiffer sidewall for the better steering performance will be good regardless! I love the 225/60-15 SZ50EP's I have now, and the 245/45-17 will not be worse, so overall, I should still be happy! Can't ask for more than that!

Z

[szh]

Agreed - Props to you for doing your homework.

Interesting how load ratings for the same sizes can vary so greatly across brands, also.

Yes, indeed! I want to stick with the SZ50EP, so that kinda dictates the size I will use. But, I will look to see if some other brand in a 17 size is better. Maybe the new Yokohama dB S2 might be an interesting experiment. I'll go look at stuff again ...

Z

[airman]

Hi, Dennis.

You are very correct about the excellent 255/50-16 tire!

I'm gonna try SZ50EP 255/50-16 on my 16x7 rims.

[szh]

Hi, airman.

I'm gonna try SZ50EP 255/50-16 on my 16x7 rims.

I am confident you will be very impressed!

Z

[AZhitman]

Z - Consider also the ES series - I'll post more on these later.

[Q45denver]

From what Q45tech was saying 255 may be a little wide for a 7" rim. 235 and 245 should be marginally OK. Also wouldn't the diameter be greater when using a narrower rim than specified?

[szh]

Z - Consider also the ES series - I'll post more on these later.

Will do! I have not looked for other tires yet - the G35 wheels are still on the way!

Z

[airman]

From what Q45tech was saying 255 may be a little wide for a 7" rim. 235 and 245 should be marginally OK. Also wouldn't the diameter be greater when using a narrower rim than specified?

255/50 is the best size to keep the speedo accurate on 16" rim (not too much choice in 235/55 sizes).

Firestone Firehawk SZ50 EP 255/50R16 tire has measuring rim width 8" and allowed rim width range 7-9". So 16x7 is still in this range although it is 1" narrower than measuring width which will lead to 0.4" actual tread width decrease. Given SZ50 has 8.1" tread width it will result in 7.7" mounted on 7" rim.

I'm more concerned if these tires will rub of suspension elements.

[airman]

Just stopped by the local Firestone to check price for the SZ50EP 255/50R16. The guy there matched the price, but said it wouldn't fit in the q45 wheel well. He thinks it's too wide. Is he right? Anybody tried 255/50R16 on 97-2000 q45?

[AZhitman]

airman - Tell him to quit second-guessing the Q experts and do what he does best - SHUT UP and MOUNT TIRES!!!

255/50's will fit with room to spare.

He should give you another discount just for saying something asinine.

[maxnix]

Or just mount one on the front and check for clearance with it on the ground.

[szh]

Just stopped by the local Firestone to check price for the SZ50EP 255/50R16. The guy there matched the price, but said it wouldn't fit in the q45 wheel well. He thinks it's too wide. Is he right? Anybody tried 255/50R16 on 97-2000 q45?

I am surprised that they matched the price! Good for you!

When I last called a local Firestone place in San Jose, CA and quoted them the Tirerack price (on my last set of 225/60-15's), they would not budge off their price. So, I ordered them from Tirerack instead.

Z