QUOTE(wong_86 @ Dec 31 2022, 06:43 PM)
Toyota vios kena bang left side tyre , go alignment test, found out rear LR alightment value is negative 1.65 and 1.35, technician said they can’t adjust it, in long run tyre will makan dalam,so ask suggestion here, stay in JB
What model year is your Vios and what's the numbers for individual Rear toes and Front toes?
Your technician comment on rear cambers of -1.65° left and -1.35° right is Internet 'wisdom' popularly published ........ which sometimes is NOT true for one of the rear tyres.
Your rear toes of Left and Right tyre will reveal angles that actually
cause 'accelerated' rear tyre wear, either even wear or uneven wear pattern.
For reduced wear rate, it is essential to adjust rear toes rather than the rear cambers, which in your case the rear cambers provides greater safety and vehicle stability in taking corners or turning. The chances of 'dangerous' oversteer phenomenon is reduced considerably in your case.
Hence, do consider keeping the existing rear cambers but have the rear toes adjusted to minimal positive toe in's, if you so wish.
The technician is correct in saying the rear toes and cambers in a Vios can't be adjusted, with toyota parts or by service centres.
However, it can be done with shim method which fortunately is available for you in a Kempas JB wheel alignment shop.
Go to Post #2 (or is it Post #1) of this thread, under list of alignment shops ..... look out for some contact details of the shop.... which i think is Jettsin or something.
Edit: The front individual toes can influence whether it is outer edge wear or inner edge wear on rear tyres with excessive Rear Total and individual Toes.
Excessive rear negative cambers does influence whether it is outer or inner edge wear, BUT in itself does NOT cause excessive tyre edge wear if you know what I mean.
This post has been edited by zeng: Jan 2 2023, 11:39 AM