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Old 04-17-2015, 06:36 AM   #21
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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.
Yes, both of my spares are "d" tires. What I've tried to do is a rotation of my tires. One year I replace the tires on one axle, the tire/rim get put in the spares spot. The spares' rims then get new rubber and placed in service. In about two years, I replace the other axle's rubber, by relegating those tires/rims to the spares position, and putting new rubber on the spares' rims then placing in service. Two years later, I go back to the first axle and replace them. The rotation system I use means no rubber on the road is over 4 years old and the spares are always good enough for spares.

Unfortunately, last year my system was thrown amuck, as I had the "newest" tires begin to fail. Thus I replaced all the in service tires and kept only the best two for spares. I guess I bought into a bad batch of tires the last rotation.
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Old 04-17-2015, 08:27 AM   #22
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Originally Posted by gashog View Post
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.
Gashog, I did not replace my spare with a D range. It is still new and I suppose I will keep it as a spare. It is still rated to carry the load of my Windjammer. In an emergency situation I will use it, reduce my speed, and carefully proceed to a place where I can get a repair. After the spare gets old I may purchase an inexpensive D range to get me by another 5 years. My brain is too tired to do computation but the rotation idea might be more economical in the long run. I just don't care to keep pulling off tires and rotating them, especially since my spare wheel is different than the other 4. That would mean changing 2 tires off their rims, balancing, etc in order to rotate in a spare, more labor expense. Of course, you could also purchase more rims. Too much trouble for me personally. The rotation method does keep it fresh however, I respect that practice.
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Old 04-17-2015, 04:05 PM   #23
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Originally Posted by Jim in Halifax View Post
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"!!!!!!
What brand name?

I got the 65 PSI right off the sidewall of the tire, it's right there in black on black.
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Old 04-17-2015, 09:01 PM   #24
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Gashog, I did not replace my spare with a D range. It is still new and I suppose I will keep it as a spare. It is still rated to carry the load of my Windjammer. In an emergency situation I will use it, reduce my speed, and carefully proceed to a place where I can get a repair. After the spare gets old I may purchase an inexpensive D range to get me by another 5 years. My brain is too tired to do computation but the rotation idea might be more economical in the long run. I just don't care to keep pulling off tires and rotating them, especially since my spare wheel is different than the other 4. That would mean changing 2 tires off their rims, balancing, etc in order to rotate in a spare, more labor expense. Of course, you could also purchase more rims. Too much trouble for me personally. The rotation method does keep it fresh however, I respect that practice.
I do it so i only buy 2 tires at a time. I just drop off my spares at the tire shop for new rubber (balance & metal stems) then just pull the old ones off and replace with the new ones. Actually quick and easy.
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Old 04-17-2015, 09:53 PM   #25
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Originally Posted by gashog View Post
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.
Replaced the spare tire AND wheel and now have 5 matching LR D Marathons and 06 alum wheels all balanced with TST Flow Thru sensors.
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Old 04-18-2015, 05:28 PM   #26
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D's are usually 65 PSI, E's are 80 PSI
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Old 04-18-2015, 06:08 PM   #27
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Got my "D" load rated Maxxis tires mounted today. I ended agreeing to something that now I wish I wouldn't of, but time will tell. They had these rubber/brass high pressure pull through valve stem that they said are excellent up to 125 PSI. They talked me into them. I guess if they blow it will be very obvious if it was these valve stems and it will be on them.
Now I'm thinking about having my china bombs mount on some 40 dollar Discount Tire white rims to use as spares.
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Old 04-18-2015, 09:07 PM   #28
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On my CC 29RE I have "d" rated tires...............I inflate them @ 80psi.........J
Curious do your tires indicate 80 psi on the sidewall?

You didn't provide size or brand information but most LR-D tires are rated for 65 psi. LR-E are rated for 80 psi

Do you have a chart from the tire company that indicates that 80 is acceptable cold inflation?
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