RB5_245

The std tire size on the 14" wheels for the 1.6?

And does anyone know how if there's a simple calculation for rolling radius rather than work out the sidewall height from the width?

Cheers
Dave

Andy M3

185/60 99% sure

browno

IIRC they're 185/55 14's (I have a 1.6GTi for track fun, but it's not here to check at the mo!) - although seeing the above - I may be wrong!
hope that helps...

RB5_245

Either one will be close enough actually, thanks

That was quick!

I was actually trying to check up if I have the right gearbox in mine (by using the tire size to find the ratios) as it's top speed is a shade over 100mph in 4th then runs out off puff and slows down in 5th.

60mph is about 2500revs. I don't think it's down on power though as it still seems to get to 60 in about 8.5 secs (2nd gear will run to 65-70).

I think there's 3 different boxes for the 1600 but this seems too long to me??

rmtypeR

I had a 1.9 GTi and that could reach 65-70mph (according to the speedo) at the rev limiter in 2nd (redline started at 6k but I think the limiter didn't cut in until 6500). I remember reading that the 1.6 definately had lower gears than the 1.9.

Mike123

Slightly wrong actually -as standard the 1.6 Gti has 185/60x 14s
The 1.9 Gti had 185/55x15s ( a lot of people put cheaper 195/50x15s on though )

Andis

iTrader: (7)

Tyre size calculator.

http://www.tyresave.co.uk/tyresize.html

RB5_245

sorted now, by my calculation the speed at 60in 5th should be around 3200 rpm and not 2500 like mine is.

Time for a new box