Any idea how you would go about finding out the weight of wheels?

or better still some idea's for light weight wheels, probably 14"

Google is your friend...

A good starting point is

wheelweights.net

put one on a scale?

14" wheels are one of the hardest to get decent tyres for

14" wheels are a b*st*rd to get decent tyres for.

DAMHIK

Listen to higsti and trikerneil. They are a sod to get decent tyres for.

ok i can go with that tip, i changed the wheels on my fiesta when 2 of them got a tad bent, changed from 15" to 16" same width and stuff tires went from 195 50 15 at £27 to 195 45 16 at £70 ouch

so keeping weight down i guess 13's would be a good option, how low do you go prifile wise to keep some ride hight?

All even numbered tyres are expensive 14,16,18 etc. Go thirteen mate.

can you just jack up the ride hight or will that mess with the handling i'm sure some 60 or 70 profile tires will just roll about on the rims

60 series tyres for 13" rims .15" rims 55 series or 50