Anyone running 20" rims w/ 245mm wide tires????

[rjdmmfl1]

Hey guys, I've been crunching a bunch of numbers, and have finally come up with the exact distance 20" x 8.5" inch rims will stick out from the mounting hub compared to our stock setup, given different tire widths (225mm, 235mm, and 245mm tires).

Can anyone running 20" rims with either 235 or 245mm tires let me know...

A. what is the offset of your rims, andB. Looking at your setup, do you think you will have rubbing issues with a a 1"-1.5" drop.

Also...Does anyone know what the travel distance is with our stock shocks/struts? Do you know if the progressive spring rates on the Eibachs will take the stock struts/ shocks into consideration?

Any constructive assitance would be greatly appreciated! Thank you and happy holidays!

[08altima35]

although expensive, i'm prolly going to have to go with a 19 inch wheels instead of a 20's because of that reason. I'm planning on getting the eibach sports when they come availible which should be anytime now and they should give a 1.5 to 2 inch drop. i think there's a good chance the 20's will scrub if the suspension is lowered at all. hell, the 19's might too. we'll have to wait and see. I'll have all the spec's and brochure when the come availible and will post them on here. at work we sell eibachs and i can prolly hook up a few of you with a rediculous price.

[rjdmmfl1]

although expensive, i'm prolly going to have to go with a 19 inch wheels instead of a 20's because of that reason. I'm planning on getting the eibach sports when they come availible which should be anytime now and they should give a 1.5 to 2 inch drop. i think there's a good chance the 20's will scrub if the suspension is lowered at all. hell, the 19's might too. we'll have to wait and see. I'll have all the spec's and brochure when the come availible and will post them on here. at work we sell eibachs and i can prolly hook up a few of you with a rediculous price.

thanks for the response Warner, and I think we could all def use that discount on the eibachs... put me on the list for the first set.

In regards to the rims, I've seen 20's with +35 ~ +45 offsets, with 245 tires before (Eduardo [edonissan] has some on his), and i can tell you that without a drop, they all fit fine. No rubbing.... but this is the thing...

I did all the calculations...

stock rims setup... 215/55/17 (17 x 7.5) w/ +45mm offsetwith this setup the outer edge of the tire sticks out 2.46" from the wheel mounting hub.

these are the calulations for various setups on a 20 x 8.5" wheel , all with +35 offset

225/35/20 ... 3.05"235/35/20 ... 3.245"245/35/20 ... 3.45"

So, with that said your tire will be either 0.59", 0.78", or 0.99" further out from the mounting hub with a 8.5" wide rim and +35 offset.

Just a bit of FYI for anyone considering 20 x 8.5 inch wide rims with a +35mm offset, and if you plan on doing a 1" drop, 225/35/20 tires will give you a 26.2" tire diameter(factory is 26.3") and the outer edge of the tire will only be .59 inches further out from the mounting hub than it currently is... this is probably the widest tire setup you would be able to get away with, and still do a drop and not have rubbing issues. Your other bet would be to go with 20 x 8.5" wheels with the factory offset (+45), this would also only be 0.6" further out than the factory setup!

[GreyZone]

My concerns with the 20s are: looks for what compromise in drivability? I think while they look great, the ride is going to turn into rock stiff. Handeling will also be decreased over 18" or even 19s.

Problem with 19s is the selection is so damn limited! That's problem number one. Number 2 problem with 19s: have you checked tire cost and availabiltiy? THe cheapest tires availabe start at $170 each, and go up from there, with many in the mid 200s to 300, per tire. Ouch. Even if I found 19s I liked, I would hate that choice every time I had to buy tires (which with my driving would be about every 14 to 18 months), plus I like getting softer rubber (better handeling) with lower tire pressure, 32 psi (improved ride comfort).

18s are going to give the best ride, and offer the best performance, while giving the best selection in both wheels and tires (and maybe run $500 for four decent tires, with lifetime balance and RH warranty via discount tire). As always, its about what you're willing to give up for what you're going to get.

I'm leaning toward 18s with a decent drop to take up the wheel well space, I think that will still look great. I will be doing a lot of research into this throughout January, including measuring spring rates, travel, stock shock valving, bump stop, compression, droop, rebound, travel, roll center, shock mounts, control arm bushings, sway bars, bushings, camber & toe correction issues, dive, squat, etc (that's from my shops web site, don't even know what half of that crap is, but I know were going to measure it, and figure it out for my AC).

I may even have custom shocks made through Bilstein, and have access (through the motorsports shop I am working with) to custom springs with my own custom spring rate (the one we determine to be best after we do the tests for the AC).

THis is one I am not rushing into. Ideally, it would be nice to have that pit crew in the wings, with a set of 18s and 20s, and swap em out, but ya know, there's fantasy, then there's reality. Of course, I have always been resistant to living in reality, so ya never know...

[GreyZone]

Let's have some more opinions on this one

[BlackNWhite]

Hey, hey, hey. Put me next in line after Robert for the discount on the Eibach Pro Kit.

[FoxMarketingVersa]

I have 20x8.5 Work Wheels on my car with a 30mm offset in the front and 19mm offset in the rear. I have a 245/30/20 all the way around, no rubbing, no nothing. Also, it is lowered 1.8inch's all the way around on a high performance spring. No issues at all, NOTHING. That is what I would do if I where you.

[rjdmmfl1]

thanks for the info, this was what I was curious about, but no one els has any lowering springs on them and could give us any real world opionions. The 3rd generation Altima's wheel well was smaller than the 4th generation's so maybe that's why my couin's rub with his wheel setup.

Do you have an 08 altima coupe? Is this the vehicle that was lowered 1.8 inches? If this is the car you're speaking of, then this answers a lot of questions, BUt if it's on another vehicle, doesn't help us much. THanks for weighing in, def appreciate the feedback!

Edit...

Ahh, I just reread your post. Your 245/30/20 tires are only 25.7 inches, a full 1 inch shorter than 245/35/20 tires. That extra 1 inch can work wonders for wheel travel!

[generic808]

It's all about the total wheel/tire diameter

Wow, a 19mm offset in the rear actually clears You got some pics of that badboy?

[rjdmmfl1]

It's all about the total wheel/tire diameter

Wow, a 19mm offset in the rear actually clears You got some pics of that badboy?

you're absolutely right Eric! Also, in regards to the rear, remember the rear wheels don't have to worry about backspacing, so if the tire diameter is small enough, then even 0 offset wheels would clear (they'd just look hella wierd)