Will GM reflash the comp for bigger/better tires/rims without much hassle and whats it going to cost?

 

I went in and they didn't have anything. They even called GM...they were waiting on a call back, that was almost a month ago.

 

That sucks I don't want my speedo/odometer to be way off and I was hoping I could talk the guy into raising the limiter.

 

Just get a tire that is the right size. You can get a bider rim and a wider tire and not mess uo the speed O.

Later

 

So how much did the reflash cost.

 

My Intense PCM was reflashed for 225/40/18 tires. I didn't want my speedo to be off, so they were nice enough to change it for me.

 

my dealer said they could do it but only with certain tire sizes he said to call ahead to make sure they can do the tire size i want

 

I checked up on this and found you can only really have the car programmed for 195/60-15s or 205/55-16s. They're both the exact same and the same tire height as stock so its pointless. I called Techline and Tech Assist and neither had an answer for me.

NOTE: This is only true for 2.2 cars.

 

They can reflash for the speed rating of the tire. There are two speed ratings on the
15's. Also the 195/60 15 is 615mm total height and the 205/55 16 is 631.9mm total height. The circumfrence of the 16's is 53mm greater.

I don't know about reflashes for speedo calibration. I only know of the reflash for the top speed limiter.