SPECIFICATION DETAILS. Options. 700 x 23c. Description. * The complete turbo trainer tyre: special cold running compound designed to cope with heat build up from rollers and turbo trainers. * Casing will not suffer tread separation like normal road tyres and deals with added stresses of accelerating and braking on revolving drums. * Ultra quiet smooth running tread keeps noise and vibration down. * Indoor use only: not designed for road use. * Weight: 240 grams.