It's actually the USE of the vehicle & driving on the road rather than tire wear per se that leads car & tire manufacturers to recommend that you get your wheel alignment & tire balancing done regularly throughout the life of your tires! Here in Aust, the recommendation is currently to get a wheel alignment & balance done whenever you fit new tires & then get them checked at least every 6 months or 10,000km; & also to always get them checked after a significant impact on a kerb or pothole etc - if an impact jars you so much that you hurt, even if only for an instant, then you should get your wheel alignment & tire balances checked!! :lecturef_smilie:
Here, we can access tire life warranties of up to 100,000km IF we comply with that regular balance & wheel alignment check regime, usually for a very reasonable cost - for the wheels on my 4WD's it's only $50 to check the balance on all the wheels (inc both spares) plus doing the w/align, so over the life of a set of 6 tires it's LESS than the cost of just one new tire!! And if you run Centramatics or similar, the balance requirement is waived & it's significantly cheaper for the w/a check alone!! I'd even go so far as to suggest that most Heavy Trucks & commercial vehicles that have a good safety & roadworthiness record here in Aus either already use Centramatics or similar devices, or they get their tires regularly balanced & their wheel alignments checked.... Just Sayin' :thumbup: