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Old 11-18-2008, 07:34 AM   #7 (permalink)
greg123
Specialist, TDi & Vegoil
 
Join Date: Jan 2008
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I agree re space savers, that's why I was trying to find some properly rated ones.

Re using one of the twin and it being overloaded, why? Using the same philosophy, using a single transit wheel would be overloaded when LWB trannies used to use twins. Yet the later ones, same tyres, used singles. Providing you pick a suitable load rating, why not.

For example - a 1650kg mid size car speced with TwinTire would have more weight per tyre than a Citroen AX running just 4 of those tyres. Less weight per tyre and within the load rating is okay in my book.

Greg.

Quote:
Originally Posted by Peter7307 View Post
Greg,
No space savers are fully rated. They are intended to save space and weight and that is all , hence the 50 mph limit for 50 miles or similar.

The “Twin tyre” was never accepted by main stream car makers and certainly not my other tyre makers apart from a small number in Europe.
The twin tyre was in fact one rim not two rims bolted together and getting the second tyre fitted was a real pain which is why most car makers walked away from it.
Apart from requiring a new rim it also was necessary to buy the licence to use it which was yet another cost car makers wanted to avoid.
The final problem was different pressures on the same rim causing some very suspect handling issues in some cars.
I would think one of the two “twin tyres” would be greatly overloaded on a standard car.

Cheers
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