Trailer Tire Models/Class ?

[Wind Chime]

We have the 2000 factory black steel single axel trailer with surge brakes, and are shopping for new tires over the winter.
What model/class tires are you people using on that trailer?

[Russ]

My stock aluminum trailer had ST225/75D15 tires. I believe the D class has a rating of 8 and a 2,540-lb maximum load at 65 psi.
It is VERY important to get the right class of trailer tire and NEVER put a car tire on that thing.

--Russ

[Catigale]

Before the , the steel trailer used 14 inch tires with a 1800 # rating.

Your 4000 # loaded boat had to have 400# on the tongue and 1800 # on each wheel leaving no margin on loading.

I usually run my tires for 5 years and throw them away for this reason. My goal is to have no flats and no issues while trailering rather than economy of cash. When the tires do go, the go from looking fine to delaminates in about 50 miles (actual experience) so inspection Is of limited value

[Spector]

Hey Windchime, mine has E rated tires. Bought one replacement from Kal tire when someone slashed one

[RHC]

I have 1997X w/ 205/75/15s. I need to replace due to cracks in sidewalls after several years sitting.
Wheels have 6 lugs. Turns out this config is a pain in the neck to find. Im thinking, might as well upgrade to 225/75/15s.
I've seen posts that people to this. My question is: does this switch require fender mods?

Thanks,

[tlgibson97]

I got these tires on the rims from Northern Tool. My rim's were rusty and needed a spare anyways.
8 Ply Radial. D rated at 2,040lbs. I've got no complaints so far with them. Even though they are the same size as what was on the trailer for some reason the inner lip of my fender rubbed on one and gouged a groove while on a weekend trip. I bent the lip out to keep it from gouging. I can't tell if my fender is not in alignment or if the axle is bent or what.

http://www.northerntool.com/shop/tools/ ... _200365320

[Russ]

I have 1997X w/ 205/75/15s. I need to replace due to cracks in sidewalls after several years sitting.
Wheels have 6 lugs. Turns out this config is a pain in the neck to find. Im thinking, might as well upgrade to 225/75/15s.
I've seen posts that people to this. My question is: does this switch require fender mods?

Thanks,

It is my understanding the first number is the tire width in millimeters. So you're looking at a tire that is 20mm wider or .787 inches. Go measure, but I doubt that the clearance is that tight.
Although my brand new stock M aluminum trailer would rub fenders (and tear the light wire) when I hit a big bump at high speeds.

Again, the tire rating is very important. Besides the size, make sure the load rating is sufficient. I found it easier to buy entire wheels with tires online. Free shipping to my door.

--Russ

[RHC]

tlgibson97: looks like your trailer uses the 14" wheel. Our local dealer did say that most of the X's used this and only a few used the 15", mine being one of them. It's curious that you replaced with same size and still encountered the interference. Makes me think the Mac designers really don't include a lot of safety factor.
RussMT : you're right about the 1st number. I'm more concerned about the height. The 2nd number (75) provides that info in terms of percentage of the 1st number (ie: 75% X 225mm is height rim to thread). Even if the tire clears the fender while sitting, there's still the question of interference when hitting bumps on the road. I'm not worried about max load. From my browsing, looks like 225s are always load rated higher than the 205s.
I'm thinking it might be less headache to just stay w/ the 205-75-15. I just need to buy the wheel separately from the tire since its tough finding that combination as an assy.
Thanks for the feedback.

[mrron_tx]

Just to add My 2 cents worth If Load rated E is available.... buy them. Yes they will be a little more cash... but a whole lot less worry. My aluminum trailer came with D's....and as soon as I can add a second axle....E's will be going on it Ron. Dauntless.

[raycarlson]

Go to Eastern Marine and Trailer Parts .com. they sell any combo of tire or tire rim painted galvanized aluminum in every size, their goodyear marathon radials are very reasonably priced also. For each tire they give you an overall diameter measurement so you'll know how much taller you'll be going for fender clearance. If your going to dual axles your wasting money going to an E rated tire, in fact you could go the opposite way to an C rating and have a smoother riding trailer and still have a GVWR of 7000# which is 30% over for safety.