knobby tyre BrE
knobby tire AmE

But the bike was there, sitting on fat knobby tires, looking cheerful.

Knobby tires are a must for any dirt racing.

Slick tires are preferred but knobby tires can still be used.

Like its big brothers it had spoke wheels, knobby tires, and plastic fenders.

It now covers virtually anything that has big, knobby tires and a hefty dose of attitude.

Wide, knobby tires provide great traction on varied surfaces.

They usually feature 36-spoke wheels and should come equipped with knobby tires for better traction on dirt.

Big yellow things with teeth and knobby tires."

Over the years, Armstrong had ridden in a handful of races on these sturdy bikes with knobby tires.

In a wheelchair outfitted with knobby tires, he made beaches and scrub brush seem like a sidewalk.

However, knobby tires can cause vibration and noise, defeating the purpose of noiseless units.

Knobby tires hummed over the slick-rock sandstone, crunching red pebbles.

The vehicles were horses, chevalines, and velocipedes with fat knobby tires.

Metal studs may be embedded in the tread of knobby tires to improve traction on ice.

There is also something painfully ironic about a sport that prizes the beauty of untouched wilderness while running it over with huge knobby tires.

It had over eight inches of suspension travel on each end, knobby tires, and was lighter than any other l000cc machine available from a factory.

Four knobby tires clawed the ground, and in about 20 seconds he made it, leaving several hooting onlookers, including me, astounded.

Big knobby tires.

Dorcas patted a knobby tire.

Birds sing, knobby tires crunch, and the only sound of civilization is the distant grinding of gears from faraway 18-wheelers.

For them, the popularity of mountain bikes - bikes with 18 to 24 speeds and knobby tires - has been a source of serious concern.

From motorcycles they took stronger handlebars and grips, and knobby tires that give better traction on dirt trails.

Wheels (usually 21" front, 18" rear) have knobby tires, often clamped to the rim with a rim lock.

The bikes have knobby tires, and the Super Cub's large front fender was replaced with a smaller unit to better clear mud.