iv got a 1990 mk3 fiesta 1.1 im considering putting aftermarket alloys on it but dont no wat to look out for wen buying the rims. i no the bolt size is imporntant but dont no this or no anything else that would be needed, so any hwelp thanks

 

The most important bit is the PCD, which on your car as most fords is 4 X 108, get them in a size that suits ie 15", 17", alloy wheel suppliers will list these by fitment of car/model.
The other thing you need to watch is the ET, this is basically how inset or outset the wheel is, it comes from the german EINSPRITZ TIEF, which means INSERTION DEPTH.
tabetha

 

The best deal will be on 15" alloys with 195/45R15 tyres. Make sure you get the 45 pofile tyres or they'll catch on your car.
Most of the deals new start at around £299 for 4 from either Motorworld (Me) Or the Dreaded Big H
You'll need that tyre size, and the wheels need at Offset (ET) of around 38 and a bolt pattern (PCD or pitch circle diameter) of 4 X 108