Tyre pressures for Simex tubless on Mechanical bealocks

Tyres Discussion. Types, performance. Anything about tyres goes in here.
Post Reply
eins
Bush Crasher
Posts: 69
Joined: Sat Jul 21, 2012 8:55 pm
Location: Auckland

Tyre pressures for Simex tubless on Mechanical bealocks

Post by eins »

Hi All

Read a few threads on here and bitten the bullet have decided to get mechanical bealocks fitted to my 15x8 rims & Simex 35 x 10.5 and run them tubeless on SWB Safari.

Just wondering what tyre pressure are people running for tubeless beadlocks and how low can you go?
User avatar
hosehustler
Hard Yaka
Posts: 2051
Joined: Thu Jan 06, 2005 12:00 pm
Location: Brooklnands

Re: Tyre pressures for Simex tubless on Mechanical bealocks

Post by hosehustler »

I run 6-10psi on a v8 hilux. approx 1.7tonne
I hate signatures
mudtroll
Hard Yaka
Posts: 320
Joined: Mon Jun 15, 2009 5:49 pm
Location: Albany

Re: Tyre pressures for Simex tubless on Mechanical bealocks

Post by mudtroll »

I've 35x12.5 on 8" beadlocked rims on a safari, normally 8 in the rear 10-12 in the front.
I'm loosing pressure in tyres when sitting in the shed so might pay to put some sealant on before putting together.
User avatar
meatc
Hard Yaka
Posts: 979
Joined: Mon Apr 02, 2007 12:00 pm
Location: Whangarei

Re: Tyre pressures for Simex tubless on Mechanical bealocks

Post by meatc »

mudtroll wrote:I'm loosing pressure in tyres when sitting in the shed so might pay to put some sealant on before putting together.


Dont bother with sealant, I have internal beadlocks at 50psi (they hold pressure) and the Simexs still go flat, sealed one and it didn't change things, have heard rumors Simexs Extremes leak through the side walls. All the sets i have seen go flat over a few weeks.
Toy - Zuk chassis tub, hilux 4.88 axles and transfer, Nissan CA18DE motor and auto trans, sc12 supercharger, 32 10'5 simex, twin motor 8274 custom freespool. Well the parts are all there in various corners of the shed
eins
Bush Crasher
Posts: 69
Joined: Sat Jul 21, 2012 8:55 pm
Location: Auckland

Re: Tyre pressures for Simex tubless on Mechanical bealocks

Post by eins »

Thanks everyone for the info. Just did not want to run into problems with the inside bead. Was aiming at the 8-12 psi range so sounds like that is going to be achievable.

The rings are 36 bolt M6 and I have a small torque wrench so was going to use that for tightening up the bolts. Is that the best way and how tight/what torque do people recommend.
User avatar
andovr
Driver/Navigator
Posts: 35
Joined: Sun Oct 12, 2008 11:10 am
Location: South Canterbury

Re: Tyre pressures for Simex tubless on Mechanical bealocks

Post by andovr »

Use a battery drill on a very low torque setting and go round and round all the bolts and slowly pull the rings together till they are fully clamped, you may and to increase the torque setting a bit, but one bolt wont pull the rings together by themselves you'll strip the thread, not to sure what the end torque setting is I just make sure their snug and not over tight never had any problems.
Post Reply

Return to “Tyres”