I believe the stock 19s are et40 and the stock 20s are et35 so 255/35/20 would probably be fine.Tire Size Comparison
Use this to get an estimate of overall diameter and wight tire. On my P3+ I’ve 255/40/19 which has the same diameter as 255/35/20 you are looking at. It will rub with stock wheel, but it could be mitigated with 3mm wheel spacer.
Attached is a photo of rubbing on upper control arm.
View attachment 406759
Hey guys, I'm trying to research if I could fit 265/30/20 on 20x9 et38 wheels on a lowered P3D+. I currently have 245/35/20 on with no issues. I understand the diameter of the tire would be smaller, but I was wondering if the width of the tire might rub on the upper control arm. Appreciate any helpful input. Thanks.
You really only need about 2 mm clearance. I wouldn't cut it any finer than that but I think you got just enough to fit the 265/30 s, but for sure the aftermarket rotors would remove any question about borderline clearance. What tires are you thinking about getting?Thanks dfwatt for the very informative response. It seems I can squeeze a 12mm thick eraser in the gap. It would definitely be a tight fit with my current setup. I previously was looking into upgrading my brakes, and now that you pointed out the fact that aftermarket rotors increase the wheel space I so desperately need, I will definitely seriously consider doing so. Thanks!
You really only need about 2 mm clearance. I wouldn't cut it any finer than that but I think you got just enough to fit the 265/30 s, but for sure the aftermarket rotors would remove any question about borderline clearance. What tires are you thinking about getting?
Sorry to hijack your thread but I’m planning on going with 20x9” +35 offset. Could I do 245/35/20 all around or would 245/40/20 all around work? Which is more comfortable of a ride?
A 245 / 40 - 20 will not fit on the front due to its fully one inch increase in diameter. It will contact the upper part of the front control arm. The 245 / 35 is about a 1% increase in Rolling diameter and can be accommodated however.
I'm running 245/35 20 Cup2s on 20x9 +34 aftermarket rims. Before that I was using 265/35 19 Cup2s on 19 x 9 rims. The 20" combo is faster, although they are the new 'Cup2.5' Connects, which are supposed to be better in any case.Most likely PS4S, was also thinking about cup 2s.
Are you going to be tracking the car? If so then the Cup 2, particularly the more recent Cup 2.5 Connect is better choice but if you're driving on the street it's no contest the PS4 is is the best street Tire available. Another question might be how much you going to be driving in the rain. The Cup 2s are kind of treacherous frankly in wet weather, PS4s on the other hand are one of the best rain tires out thereMost likely PS4S, was also thinking about cup 2s.