Hi Tec problem poll ?? - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 08-25-2002, 08:50 PM Thread Starter
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Hi Tec problem poll ??

Just curious how many people have had belt separation or similar problems with their Hi Tec's?
My first set, all 4 tires had belt separation, and they replaced them. Now, I'm experiencing similar symptoms with 2 tires and I'll have them checked tomorrow. Can I be this unlucky or is a pattern developing?
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post #2 of (permalink) Old 08-25-2002, 09:03 PM
 
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Re: Hi Tec problem poll ??

Mine are seperating along the seams. I'm guessing that they'll eventually tear apart like you'd see Semi- truck retreads. I think this is a result because I ran them low on air once or twice too many. They also dry-rotted pretty fast and ave recently begun to wear REALLY fast. I will say that these went on with no wheel weights and are pretty well balanced. I can't complain about them because the price was right (traded a dead Zuk for 4 - 31x10.5x15s on aluminum rims). But, when I get new tires I'm just going to shell out some $$ for something better.
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post #3 of (permalink) Old 08-25-2002, 09:16 PM
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Re: Hi Tec problem poll ??

Crow, The tires you gave me are really sarting to seperate like Capn said. I agree that they probably will eventually peel away. I only run them around town too. Jim
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post #4 of (permalink) Old 08-25-2002, 09:25 PM
 
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Re: Hi Tec problem poll ??

I have got 30-9.50/15 ATs on Michelin casings and have had no problem for about 1 1/2 years. I tend to keep them aired up pretty good. When I know that I will be doing alot of pavement driving I air them up to 30-35 psi. Off road I never go below 20 psi. For me, I like the handling at hiway speeds of 60-75 mph with the tires at 30-35 psi. Anything less and the handling does not seem as secure.
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post #5 of (permalink) Old 08-25-2002, 09:36 PM
 
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Re: Hi Tec problem poll ??

The comments about running low air pressure in a couple of these posts is telling. Heat is the enemy of any tire, but for a cap its fatal. low air pressure should be reserved for crawling only. Any freeway driving will destroy the bond between the case and tread, causing separation.
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post #6 of (permalink) Old 08-25-2002, 10:01 PM
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Re: Hi Tec problem poll ??

My friend has run a set of 33-12.5-15 muds with BF GOODRICH carcasess for a year, no problems.
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post #7 of (permalink) Old 08-26-2002, 02:05 AM Thread Starter
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Re: Hi Tec problem poll ??

I guess we need to define what exactly is low tire pressure for a zook.....

I run 20 psi on the road and around 10 psi off road...
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post #8 of (permalink) Old 08-26-2002, 09:28 AM
 
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Re: Hi Tec problem poll ??

I would concider 20 PSI a little low. Factory specs 22 or 23 I think. I run 22 but the 410 is a bit lighter that a Samurai, I have heard in other posts you carry a fair amount os weight Crow, so you might need a bit more pressure.

Its all about balancing weight against load. Most tires in the sizes mentioned are designed for vehicles around 4000lbs. or more. Typical max pressure (depending on case manufacturer) is 36-44 PSI, so an empty zook running about 1/2 the weight can run about 1/2 the pressure and get about the same sidewall flex which is what is causing the heat buildup. This is of course, an extreamly rough rule of thumb, but you get the idea.

In any case Crow, on road I wouldn't run less than the suzuki recomendations, if your carrying an extra 500-1000 lbs. maybe high 20's to very low 30's. Also, is your weight on the rear, or more evenly divided? You may want to bias more pressure to the rear if the load is back there.
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post #9 of (permalink) Old 08-26-2002, 05:29 PM
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Re: Hi Tec problem poll ??

i run 30 to 32 # pressure on the road.... i air down to about 15# offroad
post #10 of (permalink) Old 08-26-2002, 05:53 PM
 
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Re: Hi Tec problem poll ??

Hmmmm I'v been running mine at 18. I did the trick with the chalk line on the tire and this is what I used to determine the psi....seems like I'm a little low. I have 33x12.50 Hi-Techs M/T with only about 4k on them and so far they are fine.
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