Tire size

Feb 21, 2013
4,638
Hunter 46 Point Richmond, CA
Suggest taking your local trailer shop to inspect and replace, if necessary, especially for safety reasons. I towed many boat and fifth wheel trailers for decades and tires are the most safety critical item to maintain.
 
Aug 12, 2018
163
Hunter 26 Carter Lake, Colorado
The two things that matter are:
1. Tires correctly fit the rim
2. Tires are rated for the load they are carrying

I imagine the 5.30-12 tires available will likely fit your rims.

But:
1. What is the load rating on your old tires?
2. What is the load rating on the tires you’re considering?
3. What is the load you are carrying?
 
May 24, 2004
7,131
CC 30 South Florida
5.30-12 is the size of the tire. Don't know what that 4.50 refers to. Many rims come with a 4.50 bolt pattern size but do not know why that would be reflected on the tire itself. To measure your bolt pattern size in a 4 bolt rim measure from the center of one hole to the center of the hole in the opposite side. 4.50-12 size tires are usually used in scooters. Get trailer tires rated for the load each tire will be handling.
 
Jul 24, 2020
15
Oday Rhodes 19 Lake George
Load is a Rhodes 19 centerboard. Trailer is a Shipmate 1509, which looks to be 370 lbs. unloaded with 1500 lb. capacity. Looks like I need minimum load range C (1050 lbs. or so).
 

vwjay

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Aug 31, 2020
7
Lofland Picnic 17 Long Island sound
The two most common 12” tires you’ll run across are 5.30-12 and 4.80-12. They are both usually available in load range C. The 4.80 are rated around 900lbs a piece and the 5.30 usually 1000-1100lbs if I remember correctly. The 4.80 are slightly shorter and narrower than the 5.30