You think 16 / 17's with 45 / 50 profile tyres could increase the speed by 10 mph at that speed ?
smaller wheels will give the impression of faster acceleration.
the speedo is only valid if you've checked it off a gps.
Tin
what smaller wheels? It's 13". I think it's standard for a golf.
13" were sorta standard on non GTI, whilst every GTI i've met has been 14" or more.
If your profile is 185/60 then your wheel the diameter of the wheel inc tyre could well be smaller.
Mk2s have really really vague speedos at the best of times. Mine reads 120 at 110 and stays stuck at 120 till a true 120 when it becomes strangely accurate. And 60 aint 60, its more like 55.
What with a speedo that seriously over estimates your speed, and the fact you may be running on smaller wheels, you could easily of done 0-60 in 7.
If you live in Surrey and want to go to Guildford No Rice and borrow my GPS you are very welcome.
Tin