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#1 airboat

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Posted 29 March 2012 - 03:04 PM

I have a 17ft Liberty and currently have Goodyear Marathon ST225/75R15 D on 15X6 rims. One of the tire walls is separating so I am replacing both of them. I am thinking to replace the trailer tires with LT tires. Is it worth the additional cost to get the LT tires? Also, the selection of 6ply 225/75R15 seems limited, but I have found several 235/75R15 6 ply. Is there anyone currently using 235/75R15 6ply? If so, would you recommend the 235/75R15 over the 225/75R15? What brand tire do you have? Any advice is much appreciated!
Airboat
Roy and Carylon
Merritt Island, FL
2007 17' LD
2007 Ford F-150 Lariat

#2 Bill & Karen

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Posted 29 March 2012 - 05:13 PM

I have a 17ft Liberty and currently have Goodyear Marathon ST225/75R15 D on 15X6 rims. One of the tire walls is separating so I am replacing both of them. I am thinking to replace the trailer tires with LT tires. Is it worth the additional cost to get the LT tires? Also, the selection of 6ply 225/75R15 seems limited, but I have found several 235/75R15 6 ply. Is there anyone currently using 235/75R15 6ply? If so, would you recommend the 235/75R15 over the 225/75R15? What brand tire do you have? Any advice is much appreciated!
Airboat


airboat, I wouldn't use anything but LT tires but with 15" rims you will only need "D" rated, they do very well. I have 14"wheels with Maxxis 205R14 UE-168 trucmax and they have been on since 2008 and approx 50,000 miles on them, they were balanced with metal stems installed. they still have well over 50% tread left on them. If I had put ST tires on and IF they lasted this long I would have to be replacing them because of age (the tire people recommend every 4-5 years max) for ST tires. good luck, Bill

Edited by Bill & Karen, 29 March 2012 - 05:14 PM.

Bill & Karen Sarasota, Fl. Love being Inneggsile

 


#3 airboat

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Posted 29 March 2012 - 05:32 PM


I have a 17ft Liberty and currently have Goodyear Marathon ST225/75R15 D on 15X6 rims. One of the tire walls is separating so I am replacing both of them. I am thinking to replace the trailer tires with LT tires. Is it worth the additional cost to get the LT tires? Also, the selection of 6ply 225/75R15 seems limited, but I have found several 235/75R15 6 ply. Is there anyone currently using 235/75R15 6ply? If so, would you recommend the 235/75R15 over the 225/75R15? What brand tire do you have? Any advice is much appreciated!
Airboat


airboat, I wouldn't use anything but LT tires but with 15" rims you will only need "D" rated, they do very well. I have 14"wheels with Maxxis 205R14 UE-168 trucmax and they have been on since 2008 and approx 50,000 miles on them, they were balanced with metal stems installed. they still have well over 50% tread left on them. If I had put ST tires on and IF they lasted this long I would have to be replacing them because of age (the tire people recommend every 4-5 years max) for ST tires. good luck, Bill


Roy and Carylon
Merritt Island, FL
2007 17' LD
2007 Ford F-150 Lariat

#4 airboat

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Posted 29 March 2012 - 05:41 PM

Thanks for the advice. You confirmed what I was thinking. I really feel there isn't a noticeable difference in the two sizes, but hopefully someone has used the LT235/75R15 just to make sure the they will fit.
Roy and Carylon
Merritt Island, FL
2007 17' LD
2007 Ford F-150 Lariat

#5 WaltP

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Posted 01 April 2012 - 04:42 PM

When I upgraded to 15" wheels, I put on 225/75R 15 Radial Trails, load rated E. I figured with all the tire troubles people are reporting, the extra cost for E tires should be worth a try. Over 10k miles at 65PSI and 65 mph so far and looking good.

Walt

#6 airboat

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Posted 02 April 2012 - 05:30 PM

When I upgraded to 15" wheels, I put on 225/75R 15 Radial Trails, load rated E. I figured with all the tire troubles people are reporting, the extra cost for E tires should be worth a try. Over 10k miles at 65PSI and 65 mph so far and looking good.

Walt

Thanks for the info. What brand and model tire did you get?
Thanks, Roy
Roy and Carylon
Merritt Island, FL
2007 17' LD
2007 Ford F-150 Lariat

#7 WaltP

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Posted 03 April 2012 - 07:57 PM

They are Radial Trails by Carlisle.

Walt

#8 airboat

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Posted 04 April 2012 - 03:36 PM

They are Radial Trails by Carlisle.

Walt


Roy and Carylon
Merritt Island, FL
2007 17' LD
2007 Ford F-150 Lariat

#9 airboat

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Posted 04 April 2012 - 03:37 PM

Thanks, I will check them out.
Roy and Carylon
Merritt Island, FL
2007 17' LD
2007 Ford F-150 Lariat

#10 SteveH

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Posted 05 April 2012 - 06:59 AM

When I went to 15" wheels and tires, I also wanted NO "ST" tires, but could not find any 225 15" "LT" tires, but was able to find lots of 215/75X15" "D" rated "LT" tires, so that's what I bought. They are a version of the Goodyear Wrangler, and I've had them for about two years, and about 7K miles with no problems at all.
Regards,
Steve

#11 WaltP

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Posted 05 April 2012 - 07:53 AM

I sure wish there were some reliable hard data on this stuff.
Here are my thoughts
Tires on a trailer are subject to a type of side-ways stress (sway) that car and truck tires do not experience.
I'd think that tires marketed specifically for trailer use would be designed to best handle that stress.
I'm sure no expert, but I expect the effects of that stress would be primarily on the sidewalls.
If all that makes sense then it should be true that the best tires for us would be trailer tires,
with the maximum load rating, namely "E".

So that's what I bought. Carlisle Radial Trails, 225/75R15, Load E. They are labeled "For Trailer Use Only".
They are rated at max 80PSI. I run them at 65PSI, mostly because they are loaded well below their max rating of 2890lb/tire,
so sidewall flexing should be minimal, and higher PSI just beats up the trailer and contents more.
So far, so good, at well over 10k miles.

Walt

#12 Casita de Glenritas #1002

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Posted 11 April 2012 - 02:36 PM

I've been using P245/60R15 on 6" or 7" rims since 2001 on my 3 Casitas .
The tire is 26.5" diameter . Half inch taller then the ST205/75R14 that came with them.

These are sport truck tires.

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Edited by Casita de Glenritas #1002, 11 April 2012 - 02:37 PM.

<b>Glen & Rita #1002</b>
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Shasta Lake, CA.

#13 Nick

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Posted 29 August 2012 - 04:38 PM

Just bought a 1996 16 foot Casita. Are the original tires 13" or 14"?
Have been reading with interest all the comments. Going to get rid of ST tires... but I think I have pretty small wheels on there now.
Looking for best options... Thanks!
What doesn't kill you makes you stronger.

#14 Maestro Bob

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Posted 01 April 2013 - 03:27 PM

Is it worth and advantageous to upgrade to 15" rims and Tires for my 2008 17' Liberty?

#15 Maestro Bob

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Posted 17 April 2013 - 09:23 AM

Hi,

Is there anyone using a 15X7 rims offset -6mm on a 225X75X15 tires?

I read before in the forum to use 15X6 but the rims I'm interested AR Outlaw ll is not available on that size. I just want to make sure that its still safe to mount on a 15X7 rims offset -6mm with maxxis 8008 225x75x15.

Any helpful input is highly appreciated?

Thanks,
Robert