Does anyone know what size rim locks we need for front and rear ?
The sizes available are 1.6 , 1.85, 2.15 and 2.5

Also I plan to put them opposite of the valve? Anyone have any opinions about where the go ?

I would say opposite the valve is spot on fella. Then get the wheels balanced again.

Curious why you'd want front ones?? Are you anticipating some Moto-X style cornering ? or some near flat running rubber??

On the back, defo, opposite the valve (I suppose on the front too)

Make sure you coat them with anti-sieze compound when you fi them too, nothing worse that a rim-lock you cant get off......

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Hi, thanks for the response.

I Plan to do some offroard touring so fairly heavily loaded and with the weight and stopping power, if you run low pressures (for mud etc) I suspect the front tyre could turn and tear the valve.

Hence I think they may be a good idea

Any idea of the size needed ? How do the sizes of rim locks equate to the size of the rim ?

The front wheel is 1.85 and the rear 2.75 - I've only ever got these direct from the dealer, so I can't be 100%, but I can't imagine for the life of me why the lock sizes would be different from the wheel/tire sizes.

If you're off overland, then yes you are wise to fit these, especially if you match it up with good off road rubber, you'll get away with running a flat for a long way.

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Just my two cents (hell, cents are almost worth as much as pennies these days)...

The rear rim on the Tenere is 2.75 (inches), so the biggest on your list (2.5 you say?) might be all right?, but possibly have little if any effect - other than make tyre changing more of a fiddle - as it won't sandwich the bead between the rim lip and lock sufficiently?

I've ridden that bike in desert, on slick-rock and (well, you know, pretty much every type of terrain now) and never needed to air-down lower than 18-20psi - and at that pressure it is very doubtful if a tyre would ever slip, it's only got 48bhp and something like a TKC80 on, right?

I'd say there is little point in running really low pressures (sub 15psi) on a bike like the Tenere - it is heavy (and moreso with luggage as you say), so will need to run slightly higher pressures anyway, and lowering pressure in mud makes little difference I've found - if it's thin and greasy, the bike will still slither around due to the weight, and if it's deep and thick, it will stick get stuck - due to the weight...

If you can find a 2.75 rim-lock for the rear then it might be a nice safety net, but the reason they come in the sizes you list above is because they are really designed for full-on enduro bikes, not adventure tourers...

As for the front, I'd always run around 20psi in that, as a higher pressure will help prevent pinch-flats, and protect the rim from impact damage - there is a lot of weight (and basic suspension) on that bike which can take it's toll on a modest 21 inch front rim.

xxx

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Thanks all for the input. I agree that you will hopefully never need a rim lock on the front, I may give it a miss but will put one on the rear.