Cooper 17.5in H-rated verdict

[Tom Traveler]

Not a huge fan. Our 2022 378MBS arrived with them on in May of 2022 and, I was psyched. We had them on less six-months and already had to replace one for a very strange phenomenon of flat spotting around the tire; it ended up looking like a pentagon. We decided to go with the Goodyear G114's from Discount Tire. Also, If you're anything like me, I torque to 120 lbs every other stop. The two-piece lug nuts put on by GD at the factory are absolute crap; suggest changing those out to a one-piece from Dorman ASAP.

We had the same flat spot problem with one of ours. After about 2,000 miles on the new trailer, I took them in to a Cooper dealer to balance. After trying about 8 ounces of weight unsuccessfully on one tire, he called me over to look at the spinning tire. It had quite a hop to it. He suggested I don’t use it. I replaced it with the Westlake spare for about 4,000 miles but am going to replace two of the Coopers with Goodyears and use the OK Cooper for a spare.

[2012pearlwhiterider]

Max,
I need to order tires for my Mo, having an issue with finding the 215/75R/17.5. When you ordered your tires, did you order from your dealer or find online some place.
Thanks for your help and time.
Ken

[Second Chance]

Max,
I need to order tires for my Mo, having an issue with finding the 215/75R/17.5. When you ordered your tires, did you order from your dealer or find online some place.
Thanks for your help and time.
Ken

@2012pearlwhiterider -

Welcome to the forum!

I don't know who you are addressing - and in a thread this long, others probably won't either. Here are a few tips:

1) If you use "Reply With Quote" (to the right of "Reply") as I have here, folks will know to whom you are responding and that person will get a notification.

2) You can also tag folks using the "@" symbol and their user name (as I have done yours) - they'll also get a notification that way.

3) You can create a signature block with your RV and tow vehicle information (see mine below). That way you won't have to repeat that information whenever you post or ask a question - and others won't have to ask. You can create a signature by going to:

Forum Actions (on menu bar) -> Edit Profile -> Edit Signature (under My Settings on the left)

OK, now... I would not purchase tires from an RV dealer. I would have a reputable tire dealer order them for me or order them from someplace like Discount Tire and have a local dealer install them.

Rob

[Malco1]

Max,
I need to order tires for my Mo, having an issue with finding the 215/75R/17.5. When you ordered your tires, did you order from your dealer or find online some place.
Thanks for your help and time.
Ken

That is what my trailer came with.

[Wileykid]

You can also look at ETrailer. I had to replace the rim on mine, and it came with the Cooper (actually, I couldn’t buy the rim without the tire).

[Haznavy]

Our 2022 Solitude 378MBS came with these tires from the factory, I was initially very happy with them. Unfortunately, after about 7,500 miles the passenger side forward started developing flat spots and had to be changed out; I selected the Goodyear G114. None of the other mounted Coopers developed this problem so maybe just one bad apple in the bunch.

[Haznavy]

While we're on the subject of these tires, can anyone tell me what the exact size is of these two-piece lug nuts are? I want to replace with a one piece from Dorman and want to give them more than 9/16". Thank you.

[rtrainer]

The tire placard says 125 psi cold pressure. What number do you use in the TPMS for high end?

[msutoad]

The tire placard says 125 psi cold pressure. What number do you use in the TPMS for high end?

I have my TPMS set to alarm at 140 personally. I only ever see 140 when the ambient temp has changed A lot abd I’m rollin on the freeway At atleast 70mph.
not issues at 140, but I don’t like it so I either slow down or let some air out so I feel a little better mentally.
just what I do, interested in what others do.

[Haznavy]

The tire placard says 125 psi cold pressure. What number do you use in the TPMS for high end?

I set my TPMS to + 20% or 145psi but, start backing off the speed and will try to plan a pit stop for lunch around 143psi.