Only if the nails are on the vertical tread side. On the side, new tires are needed in 90% scenarios.
Yes, they will repair the tire. Americas tires will do it for free as well and also check all tires as well as the pressure on each one.
Yes if you buy from them
It is free if you have their tires, otherwise 10-15 per repair
Yes; it is free if tires were purchased there.
Yes
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