[markb68]

I recently purchased a 2017 440i with AWD and love it. However, only 3 winter tires came with the car as one was blown. This car only has 26,000 km on it and I estimate that only 10,000 km was driven in the winter.

Given that the other three winter tires have quite a bit of wear left, would I be ok in only purchasing one tire as opposed to the entire set or 2 tires? I read stuff online that only changing one tire can lead to problems with the drivetrain but I wanted a second opinion.


Thanks

[johnung]

Originally Posted by markb68

I recently purchased a 2017 440i with AWD and love it. However, only 3 winter tires came with the car as one was blown. This car only has 26,000 km on it and I estimate that only 10,000 km was driven in the winter.

Given that the other three winter tires have quite a bit of wear left, would I be ok in only purchasing one tire as opposed to the entire set or 2 tires? I read stuff online that only changing one tire can lead to problems with the drivetrain but I wanted a second opinion.


Thanks

Get an inexpensive tire wear gauge and actually measure and write down your remaining tread depth across the tires. You can look up the original tread depth at TireRack under the Spec tab for each tire.

If the amount of wear is significant you can buy a brand new matching tire and have that amount shaved off. Ask TireRack if they provide that service. Or find a local tire shop that can do it. Then you'll have four matching tires.

[Desertnate]

The short answer is you have heard correctly.

I don't know what the tolerance percentage is on a BMW, but most AWD cars need the circumference to be pretty close on all four corners. It's been a long time, but I remember my old Subaru needed to be within 3%, I think.

Depending on tread depth you choice becomes either shaving one good tire or replacing all four.

[thejeremyman9]

Originally Posted by Desertnate

The short answer is you have heard correctly.

I don't know what the tolerance percentage is on a BMW, but most AWD cars need the circumference to be pretty close on all four corners. It's been a long time, but I remember my old Subaru needed to be within 3%, I think.

Depending on tread depth you choice becomes either shaving one good tire or replacing all four.

BMW Xdrive is supposed to be within 1%, but some people run a little more difference without issue. However, YMMV.