They must be used with a tire pressure monitoring system (TPMS), since they don’t look different when they’re low on air.In the case of ring-support tires, the rim has to be fitted with the ring. Most of them require a special rim to hold them on.While run-flats are much better today than when they first came out in the 1980s, they can still produce a very firm, harsh ride. Rather than dissipate energy along rough roads, it transmits it into the cabin. The stiff sidewall that supports a run-flat tire doesn’t have much spring in its step.When new tires are installed on the rear, it helps reduce the potential for your vehicle to oversteer and loss of vehicle stability in wet conditions.New tires will provide better wet grip than your half-worn tires.Install two new tires on the rear axle Why put new tires on the rear axle? Watch the video below for more information: Do not mix tread pattern types such as all-terrain and all-season.Be sure that the outside circumference of all four tires is within one (1) inch of each other.All four tires must be either radial or non-radial. Do not mix radial and non-radial tires.All four tires must be branded with the same tire size.

If no instructions for tire mixing appear in the vehicle owner’s manual, adhere to the following guidelines: What guidelines should I follow when mixing tires on 4WD vehicles? Vehicle handling may be affected, and the vehicle’s speed capacity is now limited to the lowest speed-rated tire. This is to prevent a potential oversteer condition. If tires of different speed ratings are mounted on a vehicle, the lower speed-rated tires should be placed on the front axle. Can I mix different speed-rated tires on my car?

Run flat tires vs regular tires