The answer to your question will depend on your axle diameter. If you have a 2-3/8" diameter axle you can use the Dexter Trailer Springs Over-Under Conversion Kit # K71-384-00. Based on the specs of the trailer it wouldn't be any larger than this but it is possible it is smaller. If you find that the diameter is smaller, I can help you put together a kit if you can provide me with that measurement. The only premade kits are for 2-3/8" and 3" axles. view full answer...
We want to keep trailer tires - even spares - the same size, so because you have 205/75/R15 tires now, that's what you should go with. You mentioned 27.1" diameter, which is exactly right for that size tire, and because you said weight is crucial, I'll go ahead and give you the lightest option for a 205/75/R15 tire and wheel with a 5 on 4-1/2" bolt pattern:
- Castle Rock ST205/75R15 Radial Trailer Tire w/ 15" White Mod Wheel # LHACK120
The # LHACK120 weighs 39 lbs, which is the lightest... view full answer...
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