QUOTE(ktek @ May 31 2024, 08:07 AM)
goodyear atm2 tread is swallow to begin with. during 15k gone half ady.
i was struggle to use until 40k (rotate 5 tyre with spare)
By shallow you mean tread depth when new is lesser than 6 mm or 1/4"?
My XM2 was measured new at 6 mm by ruler. Actual may be 1/4" meaning 6.35 mm.
With this I get 115K km +- per pair with a residual tread depth of slightly higher than (the mandatory) 1.6 mm, i.e 2-2.x mm.
Just imagine, a GY street tyre in 1980s can get repeatedly 60-65K km life span (in a Saga then) -probably with alignment numbers meant for minimum tyre wear as part of the equation.
Tyre technology over the past 40 years have improved by leaps and bounds, be it rubber material technology or tread patttern design or manufacturing technology etc. IME current generation street tyre life of say, 45K km or below (at a residual tread depth of 1.6mm) is unacceptable and it is unlikely to be attributed to tyre brand/model etc.
Of course others' experience or encounters may differs, more so with prevalent adoption and acceptance of fear mongering of tyre safety/replacement at residual tread depth well higher than 1.6 mm.
However despite modern day computer or 'automation', the practice of wheel alignment and its skill and finishing has gone down the drain or longkang!
This post has been edited by zeng: May 31 2024, 11:05 AM