245 / 265 tire question.

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I have on the stock Michelin LTX/MS 245/75/16 tires now and will be going to the 265/75/16 soon (backordered for 2 - 4 weeks) Will I have to get a different spare or will that 245 still work? I wasn't sure if one tire spinning faster than the other will screw up the insides of my front or rear axles. Thanks guys, JH

 

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Do you have limited slip on the rear? If so running the two different sizes will tear up your rear end. You could put the spare up front and not harm anything. So if you get a flat on the rear you have to move a front to the rear and put spare on the front. I would just spend the $$$ and get a 265 size for the spare as well.

 

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Yes if you have a limited slip ,it will burn up the limited part of it because one tire will be rotating faster than the other. Also the spiders in the center of the carrier are meant for going around corners, or to say to let one tire travel faster than the other for a very limited time. The washers beside the spiders will wear out and you will have play using resulting in diff failure.
Steve Fyfe

95 2500 4x4 5 speed lots of extras on engine 370 dyno hp 33 tires lots of chrome dual shocks in front

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Steve,

You are correct that mismatched tires will burn up a limited slip. However, your front spider gears are constantly spinning, as they are driven by the left wheel. If they were not spinning in the differential case, the case, ring & pinion, drive shaft, and transfer case input would all be turning.

Pete

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'97 2500 CC 4X4 5spd Sport
'83 K5 Blazer 350 TBI (ex 6. 2), 39. 5 TSLs, 3" lift, Dana 60/GM 14 blt, Detroits

 

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My local tire store sold me a used spare to match my tire size for $20, mounted and balanced on the steel rim... just my 2 pennies worth...

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Rob's 98 Ram2500 SLT RegCab 4X4 12-valve Cummins, Automatic, 4. 10 Axle w/ Lim-Slip, Trailer Tow Pack, 285/75R16 BFG All Terrains on 16x8 Alcoa Aluminums... Silencer Ring disappeared; TC lockup switch, CAT removal, and decent paint next... . 54,000 miles; Wife's 99 Ram1500 SLT QC 4X4 w/360 eng, Automatic, Trailer Tow Pack; STOCKER! 43,000 miles - both daily drivers. If your STROKIN, your CHOKIN... on CUMMINS smoke!!!