i went to a workshop today and i found out from the mechanic that r34's tyre cant be changed by a normal car jack if we experience puncture tyre in the middle of the road. is that true? and i got a real shock today when i found out underneath both the front tyres where usually we place our car jack were heavily bent inward. r34 do not have reinforce steel for car jack. it will be a nightmare if we experience puncture tyre in the highway.