brightorangeGT 1 Posted September 28, 2011 If I were to fit a set of mondeo wheels on to my four speed 2.0 Ltr Mk5 cortina would that raise the gearing to make motorway driving a bit smoother and relaxed. Im not fussed about originality......Thanks Quote Share this post Link to post Share on other sites
bortaf 94 Posted September 28, 2011 If I were to fit a set of mondeo wheels on to my four speed 2.0 Ltr Mk5 cortina would that raise the gearing to make motorway driving a bit smoother and relaxed. Im not fussed about originality......Thanks all depends on the curcumferance change ? use one of these http://www.club80-90syncro.co.uk/Syncro_website/TechnicalPages/TRC%20calculator.htm http://www.miata.net/garage/tirecalcold.html then put the results into here to find teh differance http://www.4qd.co.uk/faq/roadspd.html Quote Share this post Link to post Share on other sites
MK5CortinaEstate 54 Posted September 29, 2011 As Bortaf says, it's not the size of the wheel that dictates the gearing, but the size of the tyre. You'd have to to increase the diameter a fair bit to pull the revs down as much as you want though, and or course the speedo would still be reading the same for a given engine speed, meaning it would not be indicating road speed anymore. Quote Share this post Link to post Share on other sites
brightorangeGT 1 Posted September 29, 2011 As Bortaf says, it's not the size of the wheel that dictates the gearing, but the size of the tyre. You'd have to to increase the diameter a fair bit to pull the revs down as much as you want though, and or course the speedo would still be reading the same for a given engine speed, meaning it would not be indicating road speed anymore. Oh I see - you understood what I was going on about - thanks. I wouldnt attempt to fit tyres that would gear it to equal what a 5 speed box would produce just something to drop the revs a bit.....Cheers for the replies! Quote Share this post Link to post Share on other sites