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Old 04-19-2017, 06:29 PM   #1
Larryjb
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Default tire sizes

Perhaps I just missed it, but I couldn't find anywhere on this site that tells you what tire sizes you can put on. There seem to be two common 14" sizes out there: 205/75-14 and 215/75-14. Do both sizes fit the rims safely? If so, is one better than the other with regards to blowout possibilities?

I know it's better to upgrade to 15" wheels/tires. But we've had an expensive year and may get more expensive. If I get a trailer and need tires I will probably keep the rims for this time, then upgrade to 15" on a cross Canada trip.
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Old 04-19-2017, 09:42 PM   #2
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What you need is a load range D tire (over 2k lbs) with a nylon overlay or cap. Doesn't really matter if 14 or 15 but some mfrs do not offer a cap in a 14.
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Old 05-24-2017, 06:11 PM   #3
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Fountain Tire has Endurance tires on sale. They are telling me the 225/75/r15 is way overkill, and I might tend to agree. The other Endurance size is 205/75/r15. Is this a reasonable size?
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Old 05-25-2017, 04:49 AM   #4
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Quote:
Originally Posted by Larryjb View Post
Fountain Tire has Endurance tires on sale. They are telling me the 225/75/r15 is way overkill, and I might tend to agree. The other Endurance size is 205/75/r15. Is this a reasonable size?
I just purchased 205/75/r15 Powerking Towmax with a nylon overlay.
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Old 05-25-2017, 07:39 AM   #5
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The key is the load rating, for a 2001 without a lift kit, 215x75x14 or 205x75x15 is the tallest that will fit but you need at least a Load Range D (LRD) and I would not buy a trailer tire that did not have a nylon cap or overlay.
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Old 05-25-2017, 07:42 AM   #6
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Quote:
Originally Posted by Larryjb View Post
Fountain Tire has Endurance tires on sale. They are telling me the 225/75/r15 is way overkill, and I might tend to agree. The other Endurance size is 205/75/r15. Is this a reasonable size?
I'm not sure what you consider reasonable. According to the Goodyear site, the Endurance specs are

o ST205/75R15 2150 pounds, MSRP $110
o ST225/75R15 2830 pounds, MSRP $121

Since the starting point is a 14" Marathon rated at 1870 pounds, and many of us considered this to be an inadequate tire (that's the whole reason for the upgrade), I don't think I would stop with a 280-pound upgrade just to save $11. But then, I am a belt-and-suspenders guy.

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Old 05-25-2017, 08:05 AM   #7
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I hear you Bill.

When I look at the side clearance of my 215R14, I do question how well the 225's would fit. The other issue is how much extra am I paying to get rims that will support the tire pressure for a 2830# tire. Also, we have to remember that 280 pound upgrade is per tire, giving a 560 pound upgrade overall.

FountainTire was reluctant to give me the 225's, claiming it was way overkill. I'm also thinking that the required tire pressure for these tires would make for an extremely harsh ride unless I'm loading up the trailer that much.

I'm still mulling things over. I have until Friday to make a decision (when the sale ends).
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Old 05-25-2017, 08:09 AM   #8
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Yes the stock tire was a 14" marathon (max inflation 50 psi) but even TM realized it was inadequate.
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Old 05-25-2017, 08:15 AM   #9
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Quote:
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Yes the stock tire was a 14" marathon (max inflation 50 psi) but even TM realized it was inadequate.
I know the stock tire on the newer TM is 15", but what is the stock load rating tire they're using now? I can't find that information.
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Old 05-26-2017, 12:17 PM   #10
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Quote:
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I know the stock tire on the newer TM is 15", but what is the stock load rating tire they're using now? I can't find that information.
The stamp on my 06 3124kb with 15in rims is Load range D...
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