r2m
Richard
My math is good at figuring out a 10% difference and close enough, but I'm pushing it to figure 11.3% speed difference in my head as I fly pass that highway patrol!265/55-R19 vs 315/70-R17 Tire Comparison - Tire Size Calculator | Tacoma World
315/70-R17 tires are 3.89 inches (98.7 mm) larger in diameter than 265/55-R19 tires and the speedometer difference is 11.3%www.tacomaworld.com
This says 11.3% off from factory