What is the 3% rule for tires?
The 3% rule states that when replacing tires, the new tire’s diameter should not differ from the original by more than 3%. This guideline helps maintain proper vehicle performance, safety system functionality, and speedometer accuracy. As a general rule, you want replacement tires that are within 3 percent of the diameter (height) measurement of the tires originally on your vehicle.
What does 70R mean on a tire?
Aspect ratio. R – designates the tire has radial construction. Wheel diameter. Load index. S – speed rating. A 285/70r17 tire measures 32. The key difference between 285/70r17 and 33×12. R17 is width: 11.Relatively same size (diameter at least) so more about width. The 33/12. The 285s will be lighter (better mpg) and do slightly better on rocks and daily driving.Performance: 33 vs. Visual Effect: 35-inch tires create road presence with their bolder looks while the 33s provide a more muscular yet slightly milder stance.R18 tires have a diameter of 33. The sidewall of the tire is 7. This means a 285/70R18 tire will make make 599 revolutions per mile, or 372 revolutions per kilometer.
What is a 275 70R18 equivalent to?
Therefore, the tire size 275/70R18 can be expressed in inches as roughly 10. A 285/70R18 tire has an approximate height, also known as the overall diameter, of 33. This height can vary slightly depending on the brand and model of the tire, as well as the amount of air pressure in the tire.What are some equivalent tire sizes to 285/70R17? Popular alternatives within 3% of the 285/70R17’s diameter include 305/65R17, 33×10. R17, 33×12. R17, 255/80R17, and 295/70R17.Height difference between 275 and 285 tires Tire height depends more on the aspect ratio than just the width measurement. When comparing tires with identical aspect ratios, a 285 tire typically measures 0.
Is a 285 equal to a 33?
Two different things. That’s 11. Difference in height between the 285/70r18 and 295/70r18 is about . The middle number on the metric tire sizes is the aspect ratio, so if the width increases so does the sidewall height. Since you’re wanting the taller tire, you went with the better option.