Tyre Wear

W

wills

Member
 Powys
Hoping someone can assist - just checked rear tyres & nearside rear tyre is worn on the inner edge. The other tyre has around 5mm of tread.

- is this likely to be tracking (no tell tale signs when driving), or could it be something else?
- I guess I should change both tyres rather than the one?

A real kick in the teeth as I now need Inspection 1, Discs & Pads fr & r, 2 tyres, extended warranty, car tax - all at once :-0

And it's in for a quad exhaust tomorrow...
 
The rear tyres will naturally wear on the inner edge due to the 2 degrees of negative camber. The most wear will probably be about 25% from the inner edge...

The rear left will often be a little lower also as the differential on our cars will bias that wheel if grip is the same across both. The difference from inner 25% to outter 25% is around 1.5mm on mine when they are due for replacement just for your info.

If one is wearing differently to the other.... and you havent been doing one wheel burnouts ;) ... Get the geometry checked out (although a significant difference should be visible to the eye!)
 
Are you using Rybrook for Inspection 1 mine is due in about 5000 miles and thinking about where to take it?
 
EdButler said:
The rear tyres will naturally wear on the inner edge due to the 2 degrees of negative camber. The most wear will probably be about 25% from the inner edge...

The rear left will often be a little lower also as the differential on our cars will bias that wheel if grip is the same across both. The difference from inner 25% to outter 25% is around 1.5mm on mine when they are due for replacement just for your info.

If one is wearing differently to the other.... and you havent been doing one wheel burnouts ;) ... Get the geometry checked out (although a significant difference should be visible to the eye!)
Click to expand...

Woo you certainly know your stuff, I love learning these sorts of things
 
rhys4 said:
Are you using Rybrook for Inspection 1 mine is due in about 5000 miles and thinking about where to take it?
Click to expand...

Firstly thank you Mr Butler! I'll bear that in mind when taking it in next week.

Rhys4 - I've used Rybrook in the past But after some service issues this time I'm using Specialist Cars Shrewsbury - specialise in BMW & Mini, mostly ex Rybrook staff, and very impressed with them so far ie chatting through on phone & feedback from local BMW owners. I think it was around £150 cheaper than Rybrook too ;-)
 
If you are on the RFT then the suggested BMW camber position is to blame, the RFT sidewall cannot deform into the sport camber position hence the rapid inside tyre wear.
 
Blimey, these Rft's seem nothing but agro! Vredesteins ordered, and will get garage just to check everything incase something has given.

It's quite dramatic wear - inside is just legal & outside is around 4mm...
 
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