Different size tires - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 01-04-2014, 12:59 PM Thread Starter
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Different size tires

Quick question. I know that its not good to use different size tires and all that but I put my winter wheels on yesterday and drove it today and the ride was rougher then hell. So I examined all the tires and the back two were completely shot and rough. So I put my AR wheels with dick cepeks back on the back.
The problem is the Dick Cepeks are a mere inch larger then the firestones in the front. The firestones appear to be 30.5" while the Cepeks are 31.5". Also the cepeks are a couple inches wider. Is this one inch height difference hard on the transfer case? It is 4 wheel drive and has auto locking hubs so I imagine the front driveshaft is always spinning. Thanks for the replies.

Luke

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post #2 of 5 Old 01-04-2014, 01:51 PM
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you are fine as long as you do not engage 4wd.

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post #3 of 5 Old 01-04-2014, 05:26 PM Thread Starter
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Quote:
Originally Posted by powerstrokeshellback View Post
you are fine as long as you do not engage 4wd.
Thanks a lot man. Ive been too scared to drive anywhere since I read this. Everywhere else they said not to do it even if theres just a different amount of tread.

Luke

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post #4 of 5 Old 01-05-2014, 05:40 PM
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The front driveshaft only spins in 4HI and 4LO. That's what the transfer case shifter does.
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post #5 of 5 Old 01-05-2014, 08:14 PM Thread Starter
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Originally Posted by madpogue View Post
The front driveshaft only spins in 4HI and 4LO. That's what the transfer case shifter does.
Ok. My understanding was auto locking hubs meant frint shaft always spins. Thanks

Luke

97 F250 CCSB 4 inch straight pipe, 6637 intake, TS 6 pos (daily)

08 F350 6.4 Reg Cab flatbed Spartan tuned, AFE Intake, DPF/DOC Delete(work truck)
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