Trying to change the tire/gear ratio on a 2000 Camaro SS and it will not allow me to change. Stock is 7.29 tire dia and 3.42 gear. So 7.29*3.42=24.931 tire diameter. My new tire is 25.80/4.11 (new gear)=6.277 or 6.28. I cannot enter 6.28 and 4.11 in the Tire/Gear wizard. Anyone else seen this? Thanks!