gr8pfulvette
01-18-2011, 07:53 AM
I got new 19" all around MRR wheels for my vert. I am concerned about how increasing the overall diameter by about 2" will affect the speedometer.
My goal is not to keep the same overall diameter as oem. I WANT a taller tire on the 19" rim. Oem diameter is about 26.25" and if I go with 275-45 19 on the back the diameter will be 28". So I can get a front that matches and about 1/2" smaller to keep the proportion close.
I have seen this size on a non lowered c5 and it looks great. That's what I want, plus a little more sidewalk can soften the ride a little. I want to fill the wheel well a bit more.
So- my question remains: how will I recalibrate the speedometer to work with the larger overall diameter tires? Also, I believe the speedo will show that I am going slower than actual- correct?
Oh- and mucho thanks for the quick reply. I have the wheels now and I'm getting ready to order the tires.
My goal is not to keep the same overall diameter as oem. I WANT a taller tire on the 19" rim. Oem diameter is about 26.25" and if I go with 275-45 19 on the back the diameter will be 28". So I can get a front that matches and about 1/2" smaller to keep the proportion close.
I have seen this size on a non lowered c5 and it looks great. That's what I want, plus a little more sidewalk can soften the ride a little. I want to fill the wheel well a bit more.
So- my question remains: how will I recalibrate the speedometer to work with the larger overall diameter tires? Also, I believe the speedo will show that I am going slower than actual- correct?
Oh- and mucho thanks for the quick reply. I have the wheels now and I'm getting ready to order the tires.