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Old 11-19-2014, 08:21 PM   #1
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Tires for TT

Hi all!

One of our biggest investments for our TT will be tires. Right now it looks like there are car tires on it, which are at least 10 yrs old. (how do I determine actual age? as they look new, but we know they aren't safe) We even have the original spare tire.

So what we are looking for is a good American made tire in either E or G rated.

Should we go with the car tire size that is currently on there 205/75/R15
or what the original spare tire size is. The approx. dry weight is 4100 lbs, double axel.
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Old 11-19-2014, 08:59 PM   #2
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This is a question that will bring two groups of people out of the woodwork. Those that favor ST trailer tires and those that favor LT truck tires. If I had been able to find an LT tire in the same size you use I would have gone with that style. I went with the Goodyear Marathon tire and have been happy. They had some problems a few years ago but they have been resolved. That is the tire of choice by Airstream. The load limit on a C rated tire is I believe 1825# which would be sufficient for your trailer. These tires are speed rated at 65 mph.
Google "tire dating" and you will learn how to determine the age.
Good luck and welcome to our site.
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Old 11-20-2014, 04:21 PM   #3
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Quote:
Originally Posted by lulupalooza View Post
Hi all!

One of our biggest investments for our TT will be tires. Right now it looks like there are car tires on it, which are at least 10 yrs old. (how do I determine actual age? as they look new, but we know they aren't safe) We even have the original spare tire.

So what we are looking for is a good American made tire in either E or G rated.

Should we go with the car tire size that is currently on there 205/75/R15
or what the original spare tire size is. The approx. dry weight is 4100 lbs, double axel.
For a trailer that old I'd replace tires and rims. Look at the axle (s) rating and add 10% for truck or trailer tires or 20% for passenger tires.

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Old 11-21-2014, 07:05 PM   #4
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There are lots of threads about tires hear and elsewhere. As 09 Harley said there are two schools on this.


I will replace my tires with Maxxis tires, available from Discount Tire. They are ST (special trailer) tires and have a speed limitation of 65 mph.


Goodyear Marathon tire site has a bulletin stating that you can add 10 lbs extra pressure to increase that to 75 mph. That assumes that you do not exceed the pressure rating of your wheels.


The 205/75/15 will be way more than adequate for your trailer. My trailer has a dry weight of 5800 lbs and has 205/75/14's on it
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