I wonder if 30 X 9.5's will fit? I currently have 235/75R15 which is about 28.8inch so I bet 30's would fit. The ZR2 have 31 I think, on same size rim.

 

i had the exact same size tire (235/75/15) and switched to 30x9.5x15 and they fit perfectly with no rubbing what so ever
dj

 

i have 31x10.5 on mine and i dont believe its got any lift and its not a ZR2

 

I got ZR2 stock wheels and tires but still looking for something bigger...

BOSTONGEORGE

 

Did you guys get the speedo recalibrated when you stepped up to the 235/75R15's or 30 x 9.5's? If so was it something that the dealership could do to my 2k Bravada?

 

if i had put the tires on i would prolly have gotten it calibrated but the chick b4 me got them on so idk if its calibrated or not...i dont kno how much of a diff it would make in speed either. hell u could just drive it and if u get pulled over b like...o i was just on my way to get it calibrated..haha

 

It's like .8 of an hour labor rate at the dealer to recalibrate.
Your speedo will be off 3mph @60mph. When you think your going 60, actually your going roughly 63. The biggest difference will be in distance, your odometer will be off as well. So if the directions say to go 1.7 miles and turn. You will have no idea when you get to 1.7 miles.

 

i have the 235/75/R15 i am looking for the biggest tires that will fit without a lift or different rims how much does it cost to get the speedometer and odometer recalibrated?

 

Ive got a 98 Blazer, 2 door but not a ZR2. Just put 31s on it and they when on just fine and the are great.