245/70-R17 tires are 0.45 inches (11.5 mm) larger in diameter than 255/65-R17 tires and the speedometer difference is 1.5%. Apr 3, 2012 · A6 / S6 (C5 Platform) Discussion - 2001 4.2 - 235 45/17 vs. 245 45/17 - Hey Gents…I currently have worn 255 40/17 mounted on “Fat 5” factory rims, which I believe are 8inch rims. Looking for alternative size recommendations. I can’t decide between the 235-45/17 or the 245-45/17. Anyone have experience using this as an 245/45-R17 tires are 0.04 inches (0.9 mm) smaller in diameter than 245/40-R18 tires and the speedometer difference is 0.2%. Shop Size 245 45R17 Tires at Best Prices + Free Shipping. Search new + high quality used tires online. Size 245 45 R17. Selling all used tires at discount costs. All used tires go through 2 layers of inspection on specialized equipment. One year warranty + free shipping on all inventory ;) Happy shopping! Brand. 225/45/17 vs 245/40/17 on 17x8J, looking for examples! I got my mind set on Michelin Pilot Sport 4 tires for my 17x8 wheels, however they only come 225/45/17 vs 245/40/17, while 235/40/17 is the ideal size for an 8J wheel. I can't get PSS and PS4S in this size, we don't get those in Europe, so that's not an option. 245/45-R17 tires are 0.11 inches (2.7 mm) larger in diameter than 245/60-R14 tires and the speedometer difference is 0.4% Tech Scroll : Start Over Select Another Size Expanded View View Mode: 245-50R17, 245-45R17 tire size comparison with 1010tires.com Tire Size calculator. Use our tire calculator to compare tire sizes based on tire diameter, radius, sidewall height, circumference, revs per mile and speedometer difference. 245/45-R17 tires are 1.28 inches (32.5 mm) larger in diameter than 235/40-R17 tires and the speedometer difference is 5.0% 245/55-R17 tires are 1.93 inches (49 mm) larger in diameter than 245/45-R17 tires and the speedometer difference is 7.0% Live each driving moment to the fullest. Amplify sport performance made to last with the MICHELIN ® PILOT ® Sport 5 tire. Find your size. View Details. MICHELIN USA. Car Tires. All Car Tire Sizes. 245 / 45 R 17 Tires. nn9s.