What Does the 5 and the J Indicate on a 15x5J Trailer Wheel and ST205/75D15
Updated 03/18/2024 | Published 06/02/2012
Question:
I just bought this trailer and on the sticker for the tire and rim size it is ST205/75D15 FOR THE TIRE THE RIM SIZE IS 15X5J WHAT IS THE 5 J MEAN .I measured the bolt hole and I believe I had 41/2 bolt hole to bolt hole .So can you tell me what tire and rim I need to buy for my spare thanks
asked by: Tim L
Expert Reply:
The 5 means that the wheel is 5 inches wide from bead to bead (not overall width). The J indicates the design of the wheel bead seat but it is nothing you need to be concerned with as this is the most common shape for all trailer tires. To measure the bolt pattern accurately I have included a link to an FAQ article that will explain the process.
There is a good chance that you have a 5 on 4-1/2 bolt pattern but you will need to measure to be sure. You will also want to make sure that you match the existing tire construction of the other tires on the trailer; either bias or radial, and you will want to make sure to match the load range on the existing tires.
If you do have a 5 on 4-1/2 bolt pattern and a load range C bias tire, then a match would be # MX94F.
Ethan K.
1/11/2021
I'm looking to upsize the tires and rims for my trailer. The size of the current tires and rims match the original question. But is there a standard offset with the 15x5J wheels?
Jon G.
1/14/2021
Jon G.
3/18/2024
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Frank T.
5/27/2020
My enclosed trailer has a tandem axle and came with st205-75R15 load range C tires. Rims are 15x5J. Is there a problem if I change the tires to a load range D? I just feel more comfortable with a D range because I do a fair amount of traveling.