[1GCRXHF]

Best guess I can make on rolling resistance can be found in the treadwear rating. Its the triple digit number followed by the speed rating (620H, etc.). From what I've gleaned over the years, the higher that number, the harder the compound in the tread (hence why it lasts longer). Extreme performance tires range from 070-150ish, street performance 200-450, and the long mile touring tires are generally in the 600+ region.


Also a note on increasing the overall height of the wheel tire. You should (if you haven't) consider the following things; increase in overall height, raising the CG. But the biggest consequence I can see is the fact that your corners were not engineering to carry that much tire. I would personally prefer my transmission to do the reducing and run a smaller, lighter tire combo. Any thoughts from your experiences?