I heard the speed is measured by the front wheels. Would changing them to a larger size mess with the Odometer?So far Continental and Kumhos are the only two companies that make the standard size tires to fit the stock rims. Originally the Continentals were all that was available. The Kumhos are a much better tire The front rims being only 4.5 inches wide are the difficult ones to find to match the rear 5.5 inch wide rims (both are 15 inch rims) Thus the common swap of putting the rear rims also on the front, You only have to replace 2 rims to make them match instead of replacing all 4. Once they are all 4 rims at 5.5 width, your options of tires is much greater, increased mileage ratings, tire overall size, etc. I changed to 180\60 quite awhile ago and the difference was truly amazing!
yes, the speed is measured/regulated from the front tires, if you go bigger, you'll gain a couple MPH in top speed, if you have the urge to go 90+MPH in a car with a 6 foot wheelbase and 1800 pound curb weight. 185/60-15's have me going 1 mph over indicated at 50MPH, stock tires are -2MPH, all from GPS data.I heard the speed is measured by the front wheels. Would changing them to a larger size mess with the Odometer?
Also I have NO power steering, it's fine when moving but parallel parking etc are a lot more challenging than any other car, how much more resistance would wider tires add?
In additional to the Kumho Solus KH16 and Continental ProContact you can get Nankang AS-1 and Vredestein Quatrac 5 tires in the original OEM sizes for a non-Brabus Model 451. The OEM sizes I'm referring to are 155/60R15 (Front) and 175/55R15 (Rear). Several companies including Yokohama, Bridgestone and possibly Hankook make the OEM size tires for the rear.So far Continental and Kumhos are the only two companies that make the standard size tires to fit the stock rims.
I 'll quote something that is on the wall Of my friends tire shop, I think it was from Michelin or Continental....." The brake stops the wheel but the tire stops the car" .what brand did you run Jim? would a 195 work or be too much mass for the brakes too handle
For a given rpm of the front wheels, tires with a larger circumference move the car further. Consequently, the actual speed will be higher than the speedometer says if the tires are larger than the size the speedometer is calibrated for.how does the front wheels measure the speed?
Let's say that the front OEM wheels and tires are turning at 100 rpm and the speedometer reads 60 mph. You then change the OEM wheels and tires to new ones that have a circumference that is 10% larger. This means that for every revolution of the wheel the car travels 10% further. Now if the wheel is spinning at 100 rpm, the speedometer still reads 60 mph but the car is really going 66 mph (10% higher than 60 mph). That means the speedometer is reading low.sorry svaraman i must be hardheaded. i still don't follow the logic. the speedo doesn't measure the ground it measures the spinning of the wheel and since the wheel is spinning slower the odometer and speedometer would be less.