Replacing new tires on front because rear ones are a different size

Is it OK to have different size tires front and back?

Having two different-sized tires on the same axle is generally not a good thing. If the diameter of the two tires is close, then the rolling radius is about the same, so in the short term, you probably won’t have any damage, but long term, you run the risk of messing up your car’s differential.

Can having two different size tires in the front and back?

What happens if wheels are different sizes. In a front- or rear-wheel-drive vehicle, as long as both rear wheels are the same and both front wheels are the same and the suspension geometry is set up to accommodate this, the vehicle will operate fine.

Do my front tires have to match the rear?

If you decide to use mismatched tires or wheels, you need to ensure that each axle of your vehicle contains the same tires. On a 2-axle vehicle, the two front tires should match and the two rear tires should match. Rear tires do not necessarily have to match the pair of front tires.

Why do cars have different size tires on front and back?

Non-performance reasons for different sized wheels

It also allows the car to put the rear axle higher up. Depending on your engine design, that can make packaging easier or more ideal in a mid-engine vehicle. Also, it often simply looks better to have larger rims in the rear.

Do all 4 tires have to be the same size?

It should go without saying, but all wheel drive and four wheel drives vehicles should have the same tire size on all four wheels. Having different sizes on some four wheel and all wheel drive vehicles can actually do damage to the vehicle.

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.

Is it OK to have one tire different?

Reasons to Avoid Replacing Only One Tire

Replacing one tire at a time can present challenges down the road since the one tire will have a different tread depth and thus different accelerating, braking, and cornering abilities than all of the others.

What happens if wrong tire size?

Effects of Wrong Size Tires

Choosing too tall of a tire can result in a vehicle prone to rolling over, a dangerous concern for any driver. Tall tires may also rub against the inside of the wheel well. While not immediately problematic, this rubbing can lead to steering issues over time.

Can you have two different tires on the same axle?

No. Mixing different tread patterns across the same axle is not allowed. The identical tyre model and tread pattern must be fitted for a single axle. You can, however, use different tyres on a separate axle – just as long as they too match each other.

Can you have different size tires on different axles?

It is critical that all four rear tires be the same tread depth, size and type. If tires are mixed on the rear axle, the difference between them can cause some tires to carry more than others. This could lead to a tire becoming overloaded which could possibly lead to tire failure.

Can mismatched tires cause transmission problems?

The condition of tires is as important as maintaining your car. Following are some of the drivetrain components which can be damaged due to mismatched tires: Engine. Transmission.

What happens if one tire is smaller than the rest?

Smaller tires can cause inaccurate information from your speedometer and odometer, create transmission shifting issues, cause anti-lock brakes to malfunction, and may even trip your check engine light.

Will different size tires affect transmission?

Increasing Tire or Rim Size Can Cause Premature Wear

If you are running an automotive transmission this can cause some serious strain depending on the current gear ratio if you choose not to re-gear your system.

What happens if wheels are different sizes?

What happens if you have a different sized wheel on one side of your car? Your differential, which allows the wheels to turn at different speeds so that you can more easily go around corners, will be working overtime and damage could occur. The suspension of your car will be working harder on one side.