need trailer tire size for seadoo boat

[rsx25]

i want to buy a spare tire for my trailer but dont remeber the tire size, 2011 seadoo challenger 180 boat. i do not have acces to my boat right now. please let me know the size.

 

[rcguy]

175/80 D13 or 185/13

 

[R1blade75]

I think the stock size is 185/13.

 

[lineofsight]

On the tandem trailer for the 210 Challenger its 185/80/13 D (check whether yours C or D, the C with lower load rating seem more common).

 

[JPass]

Tire size on our 210 is ST175/80 D13

 

[timeman]

Trailer tires should start with ST. My Challenger trailer says: ST185/80-13 D

 

[lineofsight]

Tire size on our 210 is ST175/80 D13

You may want to check the sticker, think its on the inside of the frame where V forms into tongue - a prior owner may have put the 175s on because of availability or cost reasons...

 

[JPass]

You may want to check the sticker, think its on the inside of the frame where V forms into tongue - a prior owner may have put the 175s on because of availability or cost reasons...

I can certainly check the sticker, but I don't see any issues. The load rating is correct and the trailer shops I took it to, made no mention that there would be any issues with the current tire size. There's not really a huge price difference between the 2, so no idea if that would be the reason why they're on the trailer, but I'll take a look at the trailer tag when I get home later.

 

[lineofsight]

Same tire manufacturer and model st 175/80/13 D 1610#, st 185/80/13 D 1725# rating thus rating seems to vary with size not just letter - though perhaps not enough to matter (had trailer on scale and with full tank of fuel and safety kit believe was under 4,500#). My spare is 175 - within 3% circumference and real easy to ID

 

[JPass]

You're correct lineofsight. Trailer tag states 185/80 D13. I assumed these were the stock tires since the boat was only 4 years old when got her last August and the tires seemed appropriately worn given the age. When I swap them out to radials once these are toast, I'll definitely move to the correct size.