X5 E70 Rear Tyre Wear

[K8BSH]

Any one had the rear tyres on an X5 wearing down to the cords on the inside edges, when the rest of the tread is no were near the wear markers. A local BMW repairer said this is common but I can not find much on the internet.

[Cheib]

It is...the bigger wheels seem to accentuate it......stand a bit back from yours and have a look how the wheels sit. I took the RFT's off mine at less than 10k miles, there was a marked difference even then.

[roofer]

Assuming you are on sport suspension with the big rims, its due to hegative camber.
Normal tyres do alleviate it to a degree due to sidewall flex, but its the nature of the beast i'm afraid.

[Frances The Mute]

You will see increased inner shoulder wear due to the suspension geometry and size of tyre. However, I feel the issue here is probably tyre pressures.

A well set up vehicle will give you a graduated wear pattern as opposed to just knocking the shoulder out when you're not touching the tread area. Get itc hecked (along with your pressures) and you should solve it.

[roofer]

Frances The Mute said:

You will see increased inner shoulder wear due to the suspension geometry and size of tyre. However, I feel the issue here is probably tyre pressures.

A well set up vehicle will give you a graduated wear pattern as opposed to just knocking the shoulder out when you're not touching the tread area. Get itc hecked (along with your pressures) and you should solve it.

Thats incorrect.

[K8BSH]

Thanks, Its going on a Hunter to be checked tomorrow, so i will see what they say.

[Cheib]

roofer said:

Frances The Mute said:

You will see increased inner shoulder wear due to the suspension geometry and size of tyre. However, I feel the issue here is probably tyre pressures.

A well set up vehicle will give you a graduated wear pattern as opposed to just knocking the shoulder out when you're not touching the tread area. Get itc hecked (along with your pressures) and you should solve it.

Thats incorrect.

[Frances The Mute]

roofer said:

Frances The Mute said:

You will see increased inner shoulder wear due to the suspension geometry and size of tyre. However, I feel the issue here is probably tyre pressures.

A well set up vehicle will give you a graduated wear pattern as opposed to just knocking the shoulder out when you're not touching the tread area. Get itc hecked (along with your pressures) and you should solve it.

Thats incorrect.

Would you care to enlighten me?

[8Tech]

Its not the camber that kills the rear tyres on the X5, its incorrectly set rear toe and the run-flat tyres.

I did over 30,000m on a pair of tyres on a 4.4i X5 with no noticeable inner rear tyre wear following a proper KDS set-up to the geometry. After I fitted front camberplates, I also got completely even front wear also.

Fit non-runflats then get a proper loaded vehicle suspension set-up such as a KDS and you will see a far improved tyre longevity.

[Kudos]

K8BSH said:

Any one had the rear tyres on an X5 wearing down to the cords on the inside edges, when the rest of the tread is no were near the wear markers. A local BMW repairer said this is common but I can not find much on the internet.

Yep, hard to see as well. Rest of the tyre looked good

[roofer]

Frances The Mute said:

roofer said:

Frances The Mute said:

You will see increased inner shoulder wear due to the suspension geometry and size of tyre. However, I feel the issue here is probably tyre pressures.

A well set up vehicle will give you a graduated wear pattern as opposed to just knocking the shoulder out when you're not touching the tread area. Get itc hecked (along with your pressures) and you should solve it.

Thats incorrect.

Would you care to enlighten me?

All an adjustment in pressure would do in this instance is increase (lower) or decrese (higher) the area of wear.

[K8BSH]

Had the alignment done, the rears were out alot and the front a little. The guy said the tyres will wear evenly now. Time will tell.

[Fats25]

Not on an x5, but we had the same on a 123D, got the wheels aligned and now getting even wear on front and back.

[8Tech]

K8BSH said:

Had the alignment done, the rears were out alot and the front a little. The guy said the tyres will wear evenly now. Time will tell.

Told you so!

[Frances The Mute]

roofer said:

Frances The Mute said:

roofer said:

Frances The Mute said:

You will see increased inner shoulder wear due to the suspension geometry and size of tyre. However, I feel the issue here is probably tyre pressures.

A well set up vehicle will give you a graduated wear pattern as opposed to just knocking the shoulder out when you're not touching the tread area. Get itc hecked (along with your pressures) and you should solve it.

Thats incorrect.

Would you care to enlighten me?

All an adjustment in pressure would do in this instance is increase (lower) or decrese (higher) the area of wear.

Incorrect pressures can exacerbate the problem significantly and should not be overlooked, especially when it is a 'free' fix.

X5's tend to run a high degree of negative camber. This, coupled with ~275 section width tyres will typically see a one-sided wear pattern that can be up to 2.5mm in difference from the outer to inner shoulder. Insufficient inflation pressure will see the car run on the inner shoulder even more, accelerating wear as a result.

[roofer]

Errrrm, i think i already said all that

[Cheib]

Frances The Mute said:

X5's tend to run a high degree of negative camber. This, coupled with ~275 section width tyres will typically see a one-sided wear pattern that can be up to 2.5mm in difference from the outer to inner shoulder. Insufficient inflation pressure will see the car run on the inner shoulder even more, accelerating wear as a result.

Especially when the 20 inch wheels have a 315 section

[Simond S]

I have visible wear signes no the outside of my 315's. Apparently I am cornering the car too hard and scrubbing the tyres.

Something I have never experienced before, and not expected on a brand new car.

[jimbobr1]

Do you have to fit runflats to this car? Just been told at MrTyre that you can't fit normal tyres.

[Frances The Mute]

roofer said:

Errrrm, i think i already said all that

As did I in my initial post - which is why I was interested to hear why you suggested it was 'incorrect'.