What is the 3% rule for tires?
The 3% rule says that your new tire’s total outside diameter should not change by more than ±3% compared to your current tire. If the increase or decrease is bigger than 3%, you risk problems like: Tire rubbing the frame or fork. Wrong speedometer reading (for road vehicles) The Rule of 105 says your rim’s external width must be at least 105% of your tire’s actual measured width. If the rim is narrower than the tire, airflow breaks apart and creates drag. If the rim is slightly wider, air stays attached and improves speed and stability.
How much difference in tire size is acceptable?
When changing tire sizes, we recommend staying within 3% of the diameter/height of the original tire. Any more than this and you face the risk of brake failure. The legal limit of 1.
What tire size is equal to 35×12/50?
The closest metric equivalent to a 35×12. R20 tire is 325/60R20. This size is nearly identical, with only minor differences in dimensions. The 325/60R20 measures 35. There’s not a direct metric equivalent to a 33×12. R15. The closest would be a 315/75R15 which doesn’t exist. The width of your wheels will be stamped/cast somewhere in the back of them.In this case, the tire is 35 inches (889 mm) tall. The second number is the tire’s width in inches. This means that the tire is 12.The 30/9. R15 tire has the following characteristics: a width of 30, a height of 9. These dimensions exist for summer tires. These tire dimensions are suitable for vehicles in SUVs categories.A 33×12. R20 tire measures exactly 33 inches in diameter, 12. The metric equivalent is approximately 318/60R20, with 305/55R20 being the closest available alternative size.Most flotation tire sizes have an equivalent metric tire size. For example, a flotation tire size of 31×10. R15 has a metric tire size equivalent to 265/75R15.
What is the widest tire I can put on a 20X9 rim?
What is the Widest Tire for a 20X9 Rim: The widest tire for a 20X9 rim is usually around 275/35R20, but it is important to check with the manufacturer for specific recommendations. It is crucial to consider the tire’s size and width to ensure proper fitment on the rim and avoid any rubbing or clearance issues. Typically, when dealing with 20-inch wheels at a width of 9 inches (which translates roughly to about 228 mm), you’re looking at tires in the range of 225/30R20 up to 245/35R20 as potential candidates for stretching.The general guideline is that tread width should be either the same as the wheel width, or up to 0. I used to run a 275/35R20 tire with a 9.