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Tyre Wear question

O

otispunkmeyer

Lifer
my rear tyres are more worn on the outside of the tyre than the inner side.

they are at the correct pressures. 32 PSI and its a FWD car so the rears just trail. normally i might expect it to be the other way round, maybe for handling purposes.

is something set up wrong? or is it just natural wear from cornering, bearing in mind its even on both sides.
 
Usually wear on the outsides of the tires means that they are underinflated, or perhaps overloaded. AFAIK the only thing that will cause wear evenly on the outside is underinflation.

EDIT: Do mean even on the outsides as in outsides of the car, or outsides of the tire. If the wear is only on one side of the tire you have an alignment issue. If the wear is on both outside edges of the tire it's an inflation issue.
 
If your saying just the out side, as in one side near the outer fender, is wearing it is normal and caused by cornering and why your supposed to rotate your tires every 6K miles.

If your tires are losing tread on both the inner and outer edges, inner wheel well side and outer fender sides of the tire, then that is caused by under inflation. But again if just the outer edge (one side, the outer side), is shorter in tread life rotate your tires more often and stop whipping around corners as fast as you do 😉
 
Originally posted by: otispunkmeyer
my rear tyres are more worn on the outside of the tyre than the inner side.

they are at the correct pressures. 32 PSI and its a FWD car so the rears just trail. normally i might expect it to be the other way round, maybe for handling purposes.

is something set up wrong? or is it just natural wear from cornering, bearing in mind its even on both sides.
Click to expand...

buy a new car to fix your problem

throwing $ at the problem always fixes it. look at the $Trillion$ we spent at Iraq.
 
Originally posted by: Thorny
Usually wear on the outsides of the tires means that they are underinflated, or perhaps overloaded. AFAIK the only thing that will cause wear evenly on the outside is underinflation.

EDIT: Do mean even on the outsides as in outsides of the car, or outsides of the tire. If the wear is only on one side of the tire you have an alignment issue. If the wear is on both outside edges of the tire it's an inflation issue.
Click to expand...

outsides of the tyre

tread is physically deeper on the inside portion of the tyre tread (ie the tread closest to the suspension) on the inside its probably a good 3-4mm, on the outside its getting close to being illegal.

only on the rear tyres though, and its pretty much the same on both sides.

ill take them to the garage to get them rotated.
 
Originally posted by: otispunkmeyer
Originally posted by: Thorny
Usually wear on the outsides of the tires means that they are underinflated, or perhaps overloaded. AFAIK the only thing that will cause wear evenly on the outside is underinflation.

EDIT: Do mean even on the outsides as in outsides of the car, or outsides of the tire. If the wear is only on one side of the tire you have an alignment issue. If the wear is on both outside edges of the tire it's an inflation issue.
Click to expand...

outsides of the tyre

tread is physically deeper on the inside portion of the tyre tread (ie the tread closest to the suspension) on the inside its probably a good 3-4mm, on the outside its getting close to being illegal.

only on the rear tyres though, and its pretty much the same on both sides.

ill take them to the garage to get them rotated.
Click to expand...

Have the camber on the rear axle investigated and re-aligned if need be at your local garage.

It's possible you could have positive camber on both the rears wheels causing this uneven tyre wear.
 
Originally posted by: RichUK
Have the camber on the rear axle investigated and re-aligned if need be at your local garage.

It's possible you could have positive camber on both the rears wheels causing this uneven tyre wear.
Click to expand...

And keep in mind some cars purposely have positive camber for performance reasons and can have uneven wear.
 
Originally posted by: spidey07
Originally posted by: RichUK
Have the camber on the rear axle investigated and re-aligned if need be at your local garage.

It's possible you could have positive camber on both the rears wheels causing this uneven tyre wear.
Click to expand...

And keep in mind some cars purposely have positive camber for performance reasons and can have uneven wear.
Click to expand...

That?s correct, however, for track cars it would be negative camber.

Positive / Negative camber

The negative camber configuration is quite noticeable on some of the BTCC Touring Cars I?ve seen on TV.

The main purpose is to compensate for the hard cornering to allow the tyre to achieve it?s maximum footprint around the corners on the track. This improves the grip through the corners, which obviously improves performance and track times.
 
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