[Aussie Mike]

I've seen the cable limiters in off road setups but I think they need them because of the weight of those big wheels and the huge changes in direction they undergo as they go over jumps etc. That would beat any normal shock to death.

For road cars you will find that nearly all suspension systems limit their fully relaxed position by the shock travel. You can look under just about every modern car out there and this will be tha case. Not an issue as the only weight the suspension is carrying at full droop is the weight of the wheel, upright and brake. Not a lot compared to the weight of the car at full compression.

Full compression should always be limited with a bump stop or damage to the shock can occur. In coil over setups there is usually a rubber bump stop on the shaft of the shock that stops the shock bottoming out. In other setups there is often a rubber snubber on the chassis that the control arm comes up to strike against.

Same goes for leaf spring rears and 4 links. There should be a bump stop either in the shock or on the chassis that the suspension hits at full compression before the shock bottoms out.

Cheers