Wheel and Tire Upgrade (thread 2)

[Saluki86]

I tried to respond to a thread titled the same as this that was posted in 2012 but for some reason I am getting an error.  Anyway, trying a new post.......?

Going to upgrade all 3 tires on my C16.  All three that came with it when I bought it are different....different load ratings, plys, etc.

One of the tires is "5.70-8".  I thought the "8" meant it was an 8" tire but when I put a tape measure across the rim to measure the diameter, it was 9".

So, can someone:
- Explain the number on the sidewall and how to tell what size I have.
- I wanted to go to larger tires/rims.  Perhaps 10" if these are 9".  I saw MacGyvers suggestion on etrailer and think I am gonna go that route but would listen to other suggestions.

In case it is important, the trailer is a Magic Tilt and I have Bearing Buddies on it.

Thanks,
Saluki

[kickingbug1]

   all wheels are like that i think. the 13" tires on my catalina trailer are actually mounted on wheels that have a 14" diameter but are stamped 13". a guy at a tire store near me said that all wheels measure one inch more diameter than the tires. back to tires for your 16's trailer. when i had my 16 i upgraded to 5.70 12s. what a difference that made. all that was needed was to drill new holes in the fender brackets to get enough clearance. it always felt safer with the 12s

[Saluki86]

Thanks Kickingbug.  I figured that out when I went to Walmart with my tape measure and measured the rims and wheels on display.

Thanks for the recommendation.  That is exactly the size I ordered.

[MKBLK]

Saluki - When you get the tires you've already ordered (I assume your getting the 8"), please make sure that you got load range "C", at least. Your C-16 weighs in at about 1100-1200 pounds plus all your "stuff". And the weight of the trailer, as well. Better would be load range "D" and no (hopefully) worries. I have load range "C" on my Magic Tilt and they get inflated to 75 psi to achieve maximum load capacity (910 lbs x 2 = 1820 lbs. @ 75 psi)(the critical info is molded into the tire side-wall).

Please don't put load range "B" on your trailer, they won't be safe. Also, check your tire pressure every time you tow. They have a propensity to loose air. Probably because of their small size and high pressure.

Happy trailer sailing,

Marty K.
81 CP16 Pegasus

[Saluki86]

Marty,

Thanks for the tip.  Yes, they are load rated "C" at 1045lbs each.

Yes, I was paranoid about my old tires and would ALWAYS check the pressure before a tow.  Some winter weekends that was an "excuse" to my wife (gotta go check the tires) just so I could go love on my C16 a little.  I think checking before each tow is a good 'pre-sail' checklist item.

Sal