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post #1 of 5 Old 31st October 2006, 06:15 PM Thread Starter
zaapa
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Risk of Driving with different size tires

Had a rear tire damaged and installed a slightly different size tire (until a PS2 of the right size can be shipped in for mounting). Are there any problems driving with different size tires on the car. Could the different rotational speeds of the two different size tires damage the rear differential?

Last edited by zaapa; 31st October 2006 at 06:17 PM.
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post #2 of 5 Old 31st October 2006, 06:36 PM
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What size?

How many miles until the PS2 comes in?

You should know that the new PS2 only comes in an "MO" version, and the older PS2s are non-MO (this is a mercedes version)...Michelin recommends replacing BOTH tires on an axle when going to the MO...

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post #3 of 5 Old 31st October 2006, 06:38 PM
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Using a different size tire temporarily wouldn't necessarily be a bad thing. If used for an extended period of time it would definitely cause some problems to the diff being that one tire is going to get traction before the other. Premature tire wear as well. The real question is how long is it safe to do it for and I would imagine that a less aggressive driving style would be suggested.

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post #4 of 5 Old 31st October 2006, 07:07 PM
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I was told that this is definitely a high risk. The differential is not designed to be "differentiating" all the time. Normally, with same sized tires, the differential isn't really doing anything. When you take a corner, it needs to compensate for the differences, but this is relatively short-term. In your case, the differential will be conpensating constantly and I believe it will generate too much heat in the differential and cause damage.

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post #5 of 5 Old 31st October 2006, 07:18 PM
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Quote:
Originally Posted by zaapa
Had a rear tire damaged and installed a slightly different size tire (until a PS2 of the right size can be shipped in for mounting). Are there any problems driving with different size tires on the car. Could the different rotational speeds of the two different size tires damage the rear differential?
If you mean a difference in circumference, it's a no go. If you are talking about tire width, and the difference is within 5%, I think you will be ok for a short period of time.

Last edited by verhagke; 31st October 2006 at 07:19 PM.
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