Many aftermarket wheels, when combined with wide tires, will require the use of spacers to avoid tire rub. Spacers are sold by the pair and this the widest available at 32mm wide and have studded wheel bolts because of the extra length, must not be used for competition. Definately not recommended for using on cars when 1" wider spacered type brake drums are already fitted as it will cause serious overloading of the wheel bearings. Replacement bolts are available as
BG4001BOLT.
Male and Female thread is 3/8 UNF.