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Old 04-15-2015, 06:14 PM   #11
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Make sure your rims can handle 65.


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Old 04-15-2015, 06:34 PM   #12
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On my CC 29RE I have "d" rated tires...............I inflate them @ 80psi.........J
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Old 04-15-2015, 09:40 PM   #13
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Make sure your rims can handle 65.


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I called Lionhead they claim their Sumec Rims are good going from"C" (50 PSI) to "D" (65 PSI) load rated tires just change the value stems to steel. I'm going to trust them????
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Old 04-15-2015, 09:44 PM   #14
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I would trust them and use steel valve stems.


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Old 04-15-2015, 10:39 PM   #15
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On my CC 29RE I have "d" rated tires...............I inflate them @ 80psi.........J
Where are you guys getting the 50 & 65 psi figures from....My "D" rated tires say 80psi on the side wall........I thought under inflation can be "BAD"!!!!!!
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Old 04-15-2015, 10:43 PM   #16
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Where are you guys getting the 50 & 65 psi figures from....My "D" rated tires say 80psi on the side wall........I thought under inflation can be "BAD"!!!!!!
My ST D tires say 65# on the sidewall. E tires on truck say 80#
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Old 04-15-2015, 10:47 PM   #17
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I just ordered a set of Maxxis M8008 ST225/75R15 "D" Load Rated tires from Discount Tires. My existing China Trail Express are "C" rated and I keep them inflated at 50 PSI max and never drive over 65 MPH. Now that I'm going with "D" load rated, I would like to have some opinions on tire pressure.

How many out there weight their TT and go by the Tire Manufactures Tire Load/Inflation charts or just inflate their tires to the maximum PSI rating (which in my case would be 65 PSI when I get my new "D" rated tires)?
Just looking for what people are doing that has worked for them.

Here's what Maxxis chart shows for ST225/75R15 Tires
50 PSI for 2150 LBS
55 PSI for 2270 LBS
60 PSI for 2380 LBS
65 PSI for 2540 LBS
just get e rated 10 ply and don't look back , you won't worry about not having enough tire . 80,psi
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Old 04-16-2015, 12:23 AM   #18
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My Maxxis D tires arrive at shop tomorrow. I also called Lions Head and they said the Sumec Rims could handle D range at 65 psi. I bought some 1 1/4 " steel bolt on valve stems from Oreilly Auto Parts rated for 150 psi. I will put my TPMS sensors on and have tires balanced with sensors in place. I plan to run them 65 psi/ 65 mph max.
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Old 04-16-2015, 08:16 PM   #19
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I heard so many people question the rims when going from "C" to "D" load rated tires. The most common is "make sure they are rated for 65 PSI". IMO again this is just MY OPINION. My rims shouldn't be effected going from 50 to 65 PSI, but since the valve stems are the weakest link they need changed to steel bolt on stems. Also lets say when they take my "C" load rated tires off the rims and they happen to be marked 2150 max load weight, I'm not going to change the weight of my TT so the rims are good. I'm going with "D" load rated tires for the extra safety margin. By the way my Maxxis tires are in and this weekend I'm going to have them installed (weather permitting). I avoid pulling my TT down my road when it's muddy.
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Old 04-16-2015, 10:45 PM   #20
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Wondering if when upgrading to a higher load rated tire (C to D) if most people also upgrade their spare tire? For me the spare will be used to get me somewhere to have the tire repaired or replaced then the spare goes back on it's holding bracket. I think of it like the temporary fix doughnut spare tire that cars have, that all of us have grown to HATE.
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