Quote:
Originally Posted by Tireman9
Not quite. Wheel spec and tire fit are industry and even worldwide standards for diameter and width. The well depth (for mounting) is also specified as a minimum. The design is to ensure interchangeability and safety for a pressure vehicle. I am not aware and do not recall ever seeing any of the tire/wheel fit dimensions specified for a specific tire or car.
Tire vehicle "fit" is based on minimum load carrying capacity. Tires have stated range of rim widths i.e. 5.5" to 7.0" for example for proper "fit to the wheels that came on the vehicle.
Here is an example of the dimensions that tires MUST accept and wheels must comply with.
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Sorry, I was talking about vehicle certification and the red marked area in the picture below, not the action that leads us to it.
FMVSS 571.120 has more in-depth explanations.
REF: FMVSS 571.139 paragraph S4.1. Each manufacturer of tires must ensure that a listing of the rims that may be used with each tire that it produces is provided to the public.
From that we must assume the tire manufacturer's tire installers will insure the rim specifications will meet the needs of the tire's size, load and PSI requirements.