u7198 Speedometer wrong after new tires

AUandAG · Post by **AUandAG** » Fri Dec 04, 2009 3:06 pm

I just got new tires on my '01 Corvette. I changed size from the stock tires so now the speedo is off. I installed a modified Diablo tune (revision 9r14) to change tire size..no change. I updated to revision 9r15 but the speedo is still off. A search indicated a new Crom solved the problem on the u7193. Is there a fix for the u7198?

Post by **mikel** » Fri Dec 04, 2009 3:19 pm

wasnt aware of an issue with the U7198, what size are the tires?

AUandAG · Post by **AUandAG** » Fri Dec 04, 2009 3:39 pm

Tire size is 285/35-18

Post by **mikel** » Fri Dec 04, 2009 4:45 pm

Isnt that stock??

AUandAG · Post by **AUandAG** » Fri Dec 04, 2009 8:12 pm

No, stock on the coupe is 275/40-18. Z06 stock is 295/35-18.

u7198 Speedometer wrong after new tires

u7198 Speedometer wrong after new tires

RE: u7198 Speedometer wrong after new tires