A person has a set of 15" alloy wheels with no tyres for sale. There are manufactured in Exip in Germany. I think these might only suit a vw car. These wheels are et13 7j with 4x100 with centre bore of 57. Will these fit a 4 door ford sierra sapphire cosworth car?

What size tyres would anybody recommend to suit these alloy wheels on a car sitting on standard shocks & springs?