If your camper is a 7,000# GVWR, and I think it is, check unless you have a specail,
There are 2, 3,500# axles. And they are "often" on ST20575R15 Load range C. 50 psi max and 1,820# max load.
Is that your tire?
If so they normally mount on the 15" 5.5 wide rim and are a 5 lug 4.5" bolt circle. BUT they do make a 5" bolt circle rim too. I sold my T2499 and do not recall the exact bolt circle to be 100% sure
Here is a template you can print out to determine the bolt circle
Wheel Hub / Bolt Circle Template
Hope this helps. Someone else with a 7,000# GVWR trailer in the year range may be able to confrim the 4.5" bolt circle
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
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