boyish 40 Report post Posted October 8, 2021 Currently on factory specs 275/40/20 9.5x20 et45 & 315/35/20 10.5x20 et30. Have been thinking of running a squared setup with 315’s/10.5’s all round. Anyone know of issues this may cause? I have read on other forums that it can lead to extra effort in turns, oversteer, accelerated wear on wheel bearings, decreased braking & hydroplaning? Any advice is appreciated. Quote Share this post Link to post Share on other sites
balancerider 757 Report post Posted October 8, 2021 The above plus you're likely to kill your Xdrive transfer case. Quote Share this post Link to post Share on other sites
BM WORLD 1283 Report post Posted October 8, 2021 9 minutes ago, balancerider said: The above plus you're likely to kill your Xdrive transfer case. 4.6is x5 dont have that type 1 Quote Share this post Link to post Share on other sites
dirtydoogle 383 Report post Posted October 9, 2021 Biggest difference will be increased front tyre wear. And likely clearance issue 1 Quote Share this post Link to post Share on other sites
BreakMyWindow 1874 Report post Posted October 26, 2021 You could try swapping the wheels front to back to get an idea if there are issues. Quote Share this post Link to post Share on other sites
GorGasm 563 Report post Posted October 26, 2021 Tracking and hydroplaning would be my biggest concerns, plus you save a few bucks buying the smaller front tyres. Quote Share this post Link to post Share on other sites
Sammo 2544 Report post Posted October 26, 2021 I changed to square 235/40/18 on 8.5J on my E46 and prefer it (although it did have undersized tyres on when I got it - E82 sizes). I find it feels a little livelier in the rear (far less understeer) but for day to day driving, it is susceptible to tramlining more. Quote Share this post Link to post Share on other sites
