TR4/4A TR4 Wheel and Tire Sizes

[KVH]

My wire wheels are 15 inch, 60 Spoke chrome, 4.5 inch width. Would I be able to fit 185 SR 70/15 tires on those wheels? Should I go smaller? What I have now are 165 SR 15 which were original. Thanks.

 

[Alan_Myers]

Hi,

Tire dimensions vary a bit from one manufacturer to the other. So, might I suggest you look at the tire manufacturer's website. Most list what size range of wheel widths should be used with each tire size & profile. They also usually give you the tire's outside diameter, which can be helpful to keep your speedo relatively accurate. (TR4 originally used 24"-25" diameter tires and you probably already know there were different speedos installed for OD, non-OD and the various optiona differential ratios.) .

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[MDCanaday]

You will probably have trouble with the 185/70r15.Yoko has a great 185/65r15 that is a much safer bet.Old springs may let the wings hit the front tires in turns. Also the 65 aspect is very close to the original overall diameter in comparison.....
MD(mad dog)

 

[Simon TR4a]

The Tire Rack, who are sponsors of this forum, have a very useful feature which gives all relevant dimensions of the tires, and the manufacturer's recommended rim width.
Their search feature allows you to compare products from several manufacturers by choosing a category and size.
Simon.