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Hams930T Hams930T is offline
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Join Date: Jun 2013
Location: Plano, TX
Posts: 795
Originally Posted by OldSpool87 View Post
With 17's, what is the widest you can run upfront with euro height? I've heard conflicting info. Seems 11" at the rear wheels is not a problem or at least I haven't heard of any.

Car looks great Brian!
Really depends on a lot of things beyond just ride height. If you run too much caster you'll hit the front oil cooler protection bar with a 255/40 on a 9" when you turn the wheels left. In addition, you'll need to consider the fact that you can have the tire rub the tub on the inside at the back if you try to lock the wheel. I've found that you can get away with a 9" wheel and +27et pretty easily if you stay to a 255 tire and run around -1 to -1.5 degrees of camber. - You'd need to roll your fender on this.

For the rear - You can actually go pretty wide. I have two sets of wheels that are 11" width; one is a 0 et offset and the other is a -5 et offset. I also have a set of 11.5" wheels for the rear that are a 0 et offset. On all three wheels I run a 315 series tire but I could technically run a 335 tire on the 11.5" wheel. I've test fitted a 12" wheel from my 996TT and the 12" had plenty of clearance to work.

On Euro height with essentially stock alignment - you could run a 9" front with a 245/40/17 pretty easily without having to do anything crazy to the alignment or rolling. You could keep the ET to around 30 for good fitment. If you rolled our fenders you could go down to a 25-27 pretty easily with a 245 tire or 27 with a 255 tire.

For the rear - I would give serious thought to a 11" -0 et wheel. I think most will tell you around 6-12 et is good but as you go lower you pick up camber and honestly you can run around -7 et on 11" wheel with -2.5 degrees of camber without rubbing. An 11" -0 et is a safe wheel with a 315. If you're looking to do something like a 285, I'd just stick with a 10.5" wheel as it will look more "flush" on the tire/wheel fitment. 285 on an 11" wheel will look stretched IMO.

Hope this info is helpful to you.

2017 Turbo S

Last edited by Hams930T; 08-31-2014 at 07:12 PM..
Old 08-31-2014, 07:09 PM
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