Alastair,

Need to fit mine given this weeks weather! I have a spare set of wheels and use 195/55/15 and 225/60/15.

Front sizes are standard and relatively easy to find, although I don't know of a 225/50 in a winter tyre.

.

.

225/55 might be available, but the handling is still fine with the 60 profile.

I got on ok this week on my normal wheels, but the winters do make a massive difference, and genuinely make the MR2 usable all year round, despite people surprise that you'd drive

"a car like that in this weather".

Ross