I think of my comrades, the four treadless hulks waiting for rescue.

Many of the trucks had treadless tires, so that they left no distinctive track in the sand.

My only view of Bobby was the treadless soles of his sneakers.

No matter how hard she tried to control the steering, the nearly treadless tires found their own route in the soft loam.

The red-rimmed wheels are twice normal size and lined with treadless rubber tires.

Treadless racing "slicks" on dry roads give maximum traction.

The tires are entirely treadless, as smooth and blank as the surface of a freshly washed blackboard.

Tires: NASCAR race cars use wide, treadless tires, but the teams don't have to worry about hauling or installing tires on race day.

When mounting and, especially, dismounting, the slick, treadless leather sole of the boot allowed easy insertion and removal of the foot into the stirrup of the Western saddle.

Then, suddenly, the reel of film broke - my treadless sandals lost their grip on the wet metal surface and I was flat on my back, looking at slowly floating clouds in a bright blue sky.

Likewise, these same roots extended below the surface and often impeded the progress of debris floating downstream; items of cast-off clothing, a treadless tyre . . . or a drowned corpse!

Rahal and Michael Andretti, who led for 72 laps, made pit stops on lap 82 to switch from the slick, treadless tires that are used in dry weather to the softer, treaded tires used in the rain.

The antics of the vehicles with their solid, treadless tyres on the icy roads reminded an American observer of the irregular march of young elephants: 'Many of them slid over the edge, turning upside down, and others caught fire.'

Outside the house, Farnon motioned me towards a battered Hillman and, as I moved round to the passenger's side, I shot a startled glance at the treadless tyres, the rusty bodywork, the almost opaque windscreen with its network of fine cracks.

The studded tyre category involves competitors riding on bikes with spikes up to 3 centimetres in length screwed into each treadless tyre, each bike has 90 spikes on the front tyre and 200-500 on the rear (regulations on length and types of permissible studs are controlled by the sanctioning body).