2 rim locks on rear?

I was cleaning my chain and noticed that the rear tire has spun a little and the valve stem is tweaked just a little bit. I'm running 13 pounds in the rear (Stock DOT Michelin knobby on TE510). Do you guys just default to 2 rim locks to prevent this?

thanks

All the big-bores that I have owned had 2 rim-locks with no issues

I just have one on my 630; haven't seen the tire spin at all since I put it on.

I believe some people run 2 to make balancing easier.

I run dual rim locks front & rear. Eliminated out of balance vibration @ highway speeds & piece of mind if there's ever a blowout. Also great for getting back to where ever if you have to ride a flat out of a trail, keeps the tire on. And of course less chance of spinning a tire on the rim & ripping off the valve stem.
Does make mounting a new tire a wee bit more challenging.

P.S. I used the valve stem hole as my second rim lock location as it was directly across the factory one & just drilled a new valve stem hole center of the 2 rim locks.

Are you sure your rimlock was tight enough? I have heard 9ft lbs and that is actually pretty tight when you feel it with a box wrench.

I'm going to check it now. My WR450F had 2 on the rear and never slipped. The PO of this bike did install 4mm tubes so maybe he didn't tighten things down. If I decide to run 2 would it take a 2.15 or 2.75 lock?

thanks

Should not need an additional rim lock from a slippage perspective but are very good for balancing and runniong on flats.

Well, mine was very tight yet the tire had spun!

I concur, Odd yours spun if installed properly (maybe its just a freak occurrence)- maybe the previous installer used a weird tire installing slime that did not evaporate and added slip. You can use 2 as stated. I use one rim lock, and I run 8-9 lbs on my rear tire, and 9-10lbs on the front. I have never spun mine and FWIW or a laugh, my knobbies are very worn and the car broke down so I actually used it to go to work, and once I got home, I did an on the pegs- 25ft burnout in my paved driveway- didn't spin on my rim. Time to change tires before I turn into a SM hooligan and show the world my newly obtained skill. I was just doing what Shane Watts (instructional video) told me to do officer- just trying to improve my counter steering skills.

I run two front, two rear, for those days when I have a flat. Makes riding it out much easier...