Powertrax No-Slip/Lock Right - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 02-25-2002, 12:51 PM Thread Starter
 
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Powertrax No-Slip/Lock Right

I was thinking of buying one of the two and read all the posts on them. The problem is that I have 255/85 tires and my spare is a 265/75. If I got a flat in the back, what would the locker do???

1996 2Dr. 4X4 Tahoe, 350 Vortec, 3.73 gears, Magnaflow 3" Catback, Airaid Intake, and a bent front diff. skid plate! (Stock susp. on 255/85's)
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post #2 of (permalink) Old 02-25-2002, 01:05 PM
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Re: Powertrax No-Slip/Lock Right

I have heard that it will ruin it if you drive it very far like that. That is, if you ran the 265 and 255 on the back. I would suggest that you put the 265 on the front if you get a rear flat, and put one of your 255's on the back to keep it the same. The only problem with that is, it's not really safe to do. You need to find a spare that is a 255. That would be the best solution.

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post #3 of (permalink) Old 02-25-2002, 02:11 PM
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Re: Powertrax No-Slip/Lock Right

Whenever you run a locker, use an air gauge to get your tires to the same pressure, then use a tape measure to ensure they are the same height. Measure from the ground to the top of the rim. If you get a flat, measure the spare with the weight of the truck on it and adjust accordingly. You will have to deflate the 255 a little. Always keep a tape measure with you.

The size difference between the 255's and the 265 is somewhere near 3/4" nominal (ride-height - not calculated difference) and probably less with weight on the truck. You will feel the truck pull to the short side but it will disengage when it needs to re-adjust. Will make one hell of a bang (less than a Detroit, though) that will echo through the driveshaft and cause you to think the entire rear end has blown.



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post #4 of (permalink) Old 02-25-2002, 02:44 PM Thread Starter
 
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Re: Powertrax No-Slip/Lock Right

Thanks for the input.

I think that I would swap the 255's to the back and deflate the odd 255 in the front to get the same rolling radius as the spare 265.

When I get a 255 spare, is there a way to mount the tire to the roof? I would like to get the most room out of the back as possible.

1996 2Dr. 4X4 Tahoe, 350 Vortec, 3.73 gears, Magnaflow 3" Catback, Airaid Intake, and a bent front diff. skid plate! (Stock susp. on 255/85's)
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post #5 of (permalink) Old 02-25-2002, 03:32 PM
 
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Re: Powertrax No-Slip/Lock Right

i would put the front on the back and the spar on the front in the case of a flat. thats what i would ahev done when i still had my stock spare, but now my sopare is a 285 as well as the rest of them. as stated above..make sure your rolling radius is the same i nthe rear. i makle mine the same to the tenth of a PSI....i love the cool digital pressure guages. but i do toss tape o nthem to check and make sure everything is ok.

---Peacock posted this
<font color=red>'96, richmond 3.73, detroit rear, cold air, dual flowmasters, new drive-train,</font color=red>
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