Cooper 17.5in H-rated verdict

**Wileykid** · 10-13-2022, 08:49 AM

The 17.5" Coopers on my trailer has about 14K miles on them. The tread looks great, and the small cross hatching on it is just about worn off. Even wear, and happy so far.

The spare that came with my trailer is a 17.5" Westlake.

**msutoad** · 10-23-2022, 06:15 PM

I have the coopers on my Momentum also. I have about 14-15K miles on them , and they are wearing well. I did rotate the front tires to the rear since I have 3 axles. The front has some scrubbing on the edges from turning, which makes sense, but aside from that they are wearing as well as I could expect. I do run them at the 125 PSI. I am in NC and its in the high 90’s in the summer, and I spend time in FL too, where it is at least 100. Under inflation as others have said is no good

… These tires have performed well, and they are stout weight wise FOR SURE!!!

**ChopchopBangbang** · 04-30-2023, 11:17 PM

Originally Posted by Second Chance

According to GD's parts lookup site, they are LRH Cooper Roadmasters:

https://www.granddesignrv.com/owner-...s/detail/71019

Rob

says that you are lost

**msutoad** · 05-01-2023, 04:41 AM

Originally Posted by ChopchopBangbang

says that you are lost

Oh you are referring to the link is broken and says you are lost... I didnt understand what you were saying ChopchopBangbang... I get it now.

**Second Chance** · 05-01-2023, 06:35 AM

Originally Posted by ChopchopBangbang

says that you are lost

That link was posted last July (this is an old thread). GD has redone their web site since then.

Rob

**WhittleBurner** · 05-01-2023, 07:42 AM

Originally Posted by ChopchopBangbang

says that you are lost

Here is the updated link to parts look up, pick your rig and have fun looking!
https://www.granddesignrv.com/owners...s/parts-lookup

**Haznavy** · 05-01-2023, 09:28 AM

Originally Posted by Brother_Bluto

So what is the verdict on the Cooper 17.5in "H" rated tires they are now mounting on the Momentum's and Solitudes? Are they the "Work Series Regional Haul Trailer (RHT) tires?

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.

**Hoopy Frood** · 05-01-2023, 09:56 AM

Hopefully you're not seeing any movement in the lug nuts when you check the torque. Or are you loosening and re-torqueing to 120 lb.ft.?

**Haznavy** · 05-01-2023, 10:00 AM

Hoopy Frood,

Other than the lug that I can't get a socket on, I haven't noticed any movement in the lugs when torquing. Just can't get a socket on the swollen one which worries me.

**Hoopy Frood** · 05-01-2023, 10:04 AM

Gotcha, sometimes people will get over-enthusiastic and tighten the lugnuts too much and stretch them, leading to eventual failure. Sounds like you have it will in hand.