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Old 07-12-2012, 12:01 PM   #1
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mixed tires

Last year I replaced 4 rear GY on my 36' gas class A with Bridgestone R250 . Now it is time to replace the GY's on the front. Tire size is 245-70-19.5 I am looking at Michelin because of the discount price thru FMCA Advantage program at $358.00 each. My question is, would I have any problems with handleing or ride with 2 differant brands of tires? I think the Michelin's are a softer sidewall for a softer ride. Would that affect the steering adversly? I like the Bridgestone's. They are wearing well, and the price is only about $17 more for the Bridgestone's. Has anyone used this combination?
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Old 07-12-2012, 12:44 PM   #2
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Different tires brands and sizes might have a different "slip". Slip is how much side deflection the tire allows from being directly centered over the center of the tire. If the tire combos have significant difference in slip, you might feel it in turns or perhaps in tracking. As an example, if the slip is greater in the front than the back I would wonder if the front might follow ruts more easily. However, that might not be such a factor because comparing a single steerer to a dual is apple vs. apples.

I do know that my rig game with stock Michelins on the back and GY truck tires on the front. After getting 6 new Michelins it really seems more solid in handling. Again, that isn't something I can say "fixed" anything since new tires might help across the board all by themselves.

Personally, I would match tires. Good Luck.
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Old 07-12-2012, 01:14 PM   #3
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I replaced all six tires on our DSDP, the fronts are 305/70, XRV and the rears are 275/70, XZA2 Energy and 8" Alcoa rims all the way around. I noted an immediate change (for the worse) in handling. I've had a total front end inspection and alignment done with little change. It just doesn't track as well as it used to. Running tire pressure according to the charts too.
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Old 07-12-2012, 05:07 PM   #4
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I don't think mixing steer tires and drive tires is a problem. We do it on trucks all the time. The only concern should be the overall tire diameter. Different tire brands can vary alot even though they are marked the same size. If you have ABS brakes, the wheel sensors measure the rotation speed to detect tires losing traction. You surely, want all the tires the same diameter rotating at the same speed. Of course never mix tires on the same axle.
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Old 07-13-2012, 08:08 AM   #5
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Thanks for the input guys. I think I will play it safe and stay with the Bridgestone's!
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Old 07-13-2012, 09:17 AM   #6
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If the tires on the right, and left, on any one axle are the same, it's not mixing!

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Old 07-13-2012, 10:19 AM   #7
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When I put new tires on the rear(duals) of our PU it was squirrly for about a 1k miles and it went away. I think it was the sharp edges &/or bumps until they got wore off. They were moderate traction tires.
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Old 07-13-2012, 03:13 PM   #8
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No sweat as long as the tires on each axle are all the same. I'm running GY on the front and Continentals on the back right now.
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