Why are you running the 255/45/20 tires?

[ajpturbo]

I think because of the clutch packs in the rear diff is what makes running a staggered setup possible...if it was a full time awd system I would not try running a staggered size setup....not saying it wouldn't work but I wouldn't do it

Bpd I think you are just a beneficiary of this particular system.

If there isn't something to disengage where would the difference in speed between tires come from?...tire wear, gear wear,axle stress?...kinda like why for street use we need limited slip diffs and open diffs....if u ran lockers the tires bark and hobble...

It's never bad advice to say staggered set up on awd is risky unless car incorporated that from the factory.

I was never bold enough to try

 

[DakotaSHO]

Glad I came across this thread, was going to have new 245/45/20's put on today, called the tire shop up and got a price quote for the same tires only in 255/45/20's and saved myself $50

 

[sunwolf]

I now have 255/45/20 all around and with the speedometer at 75 my GPS speed was 77.5. OBDII speed was ~74.5. If you upgrade your tires you can always have your tuner adjust your tune for the larger size.