Anything to worry about? Tyre wear stats

[T1berious]

Good morning,

I'm hoping someone here will shed some light and tell me I'm worry unnecessarily.

So the car came back from the OPC with the following report on the tyres. The fronts were replaced after a pot hole killed one.

Tyre	Outer	Middle	Inner
FL	5	5.5	5.5
FR	5.5	6	5.5
RL	4	3.5	4
RR	4.5	4	4

I had the geometry done by Centre Gravity but have been told the geo's fine. I just thought uneven wear meant there's a problem? I'll be replacing the rears next year as the car isn't used during the winter.

Cheers for any advice

T1b

[Dave Brand]

Those figures wouldn't worry me. Bearing in mind that they are rounded to the nearest .5mm, the actual differences between adjacent readings on the same tyre may be much less than the indicated .5mm.

[Pica-Pica]

No worries at all.
a) if accurate, they are not a worry
b) readings are never that accurate anyway, it depends on
i) the instrument. Even digital or analogue.
ii) how hard you press the depth gauge shoulder onto the tyre surface.
iii) whether the gauge retains the reading, or it has to be read quickly.

[T1berious]

Cheers chaps!

Much appreciated!

[E-bmw]

T1berious said:

I'm hoping someone here will shed some light and tell me I'm worry unnecessarily.

Tyre	Outer	Middle	Inner
FL	5	5.5	5.5
FR	5.5	6	5.5
RL	4	3.5	4
RR	4.5	4	4

I just thought uneven wear meant there's a problem?

0.5mm difference isn't uneven wear, it is nothing to worry about, just check all are at the correct pressure as FR could be slightly low & RL slightly high.

When checking tyre pressure use PSI not bar.

Most gauges are digital these days & will only go down to 1 decimal point.

0.1 bar is 1.5 psi you could be out by.

0.1 psi is under 0.007 bar for your possible error.

Obviously these figures exclude any errors from the meter itself, but these would be the same for every tyre.