Sergeant Friday said it best,
"Just the facts, ma'am - just the facts".
AZ - good plan to ask both the trlr mfgr & rim mfgr for the rim pressure rating. Check the rims *first* to see what they are stamped.
"Just the facts" = your job & easy to do!
"up2nogood" reminded me of a rim & tire issue that applies to *any* tire shop - whether it's a Mom & Pop or Big Name!.:C.:C
RED FLAG WARNING !!
No matter what tire brand or load range you choose, your tire shop employee may accidentally be *up to no good* because he doesn't know any better - - or intentionally be *up to no good* because he's saving himself some time & effort.
The tires: Don't assume. Check the date codes!.:W
*If* the tire shop is removing and remounting the wheels on your trailer (cars & trucks also):
1. Keep in mind the guy doing the job normally does cars & pickups. This may be his first trailer since Taco Bell.
It's *YOUR* trailer (or car / truck). *WATCH* the work in progress.
2. *BE SURE* the guy/s doing the work know where to jack the trailer, at the location you (or the axle/trlr mfgr) prefer!!
*If* jacking under the axle - rather than the frame - is OK with you, make sure they jack under the spring perch..:)
2. *KNOW* the torque specs & torque sequence for your wheels!
When it's time to re-mount the wheels - the guy should only use his impact wrench to "snug" the lug nuts - then hand torque to the desired spec.
(Ask to be sure you and he have the same torque spec in mind!)
When you see him put a torque wrench on a nut - and that nut doesn't move before his torque wrench "clicks" -
he ran them down too tight with the impact!.:(
No telling what the *real* torque is!
Also, he should be following some kind of alternating sequence when torquing the nuts (close to what you know is correct).
Failure to do the above may result in cracked wheels and/or broken studs. (Costco is famous for that - no need to ask how I know, LOL!)
Don't hesitate to politely call a halt and ask questions - if you see something that doesn't look right.
It's your trailer, your bucks!
*If* you're doing the wheel/tire mounting yourself, of course, you will do the same.
(So why shouldn't the shop?)
4. Whip out your handy-dandy tire gauge, & check the desired tire pressure before you leave. Tire shop folks have 28psi on the brain!
5. Lastly - be sure to re-torque the wheels after about 100 miles.
Roll on!
.