Brandon how long do you have for your answer? I just got my 20" rims and im getting ready to wrap 275/35/20F and 315/35/20R on them I can report back and let you know if I run into any VDC issues? on my 19" set up I did 265/35/19 F 305/30/19R but as you said the rotational diameter wasn't changed quite as significantly as it is now. though I will say on the tires I have for sale now when I did run them I had no issues. though I am curious to see if the time it takes for my traction light to come on under a hard accel comes on sooner because of speed sensing issues (i.e. driveshaft/wheel rotation not adding up for the ECU) anyway I understand most of the last of this is irrelevant to you BUT I do understand what your trying to alleviate here as the first night I took my 20" rims and tires out I rolled the rim inside the tire and popped it off the bead(who tff runs 275s on an 11.5" rim!?? *rant concluded*) so I had to place my buddies 18" SSR's on my rear to get the car home and the VDC wouldn't let the car go over 23mph without turning VDC off (due to issue mentioned above) anyways im done rambling away haha ill let you know what I find though man! sounds like you might have to break down and get some coils to bring that front end up slightly though unfortunately.
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