What is the difference between 245 50R20 and 255 50R20?
A 255/50R20 is taller than a 245/50R20 and hence, has a larger circumference. There are a number of only comparison calculators that will show you the actual numbers. When it comes to tire sizing, the initial number is the tire width in millimeters. Therefore, a 255 tire is 255 millimeters wide, and a 265 tire is 265 millimeters wide. That’s a 10mm difference in width.
Is 255 tires worth it?
The narrower 255 tires excel in fuel efficiency thanks to reduced rolling resistance, making them the smart choice for daily commuting and highway driving. The wider 265 tires deliver a larger contact patch and superior grip, perfect for hauling, off-road adventures, and drivers who want that aggressive stance. If you’re after fuel savings, quiet rides, and easy fitment, 255 tires will likely serve you well. But if you’re going off-road, hauling gear, or just want that wide, planted look, 265 tires offer the grip and strength you need.