250x40 Brake Shoes trailer Knott 10" Brakes suit Ifor Williams 3.5t Tandem Axle
Ifor Williams trailers since 1992 fitted with 250x40 Knott brakes. Tansporta, TT105G, TT3017, TT126G, TT3621, TB range (when fitted with 250x40 brakes). Graham Edwards trailers pre 2011 (when fitted with 250x40 brakes).