Changing our tyre size...

[jalesi2001]

Hi guys, what u rekon about changing our tyre sizes?

I know some peeps have done it, i looked on ebay for tyre prices, we have 195/55 VR15, if you want TOYO's, thats about £180 for 4, if you change them to 195/50 VR15, you can get 4, for £123!! A fair saving, and it would only decrease the sidewall height slightly, making your speedo out by less than 1mph i rekon. I cant remember the exact calculation, but i think it would put the speedo out by about 2-3%, which on a 140mph speedo, will work out at less that 1 MPH!!

So has anyone done it, and if so, did they notice any difference, for better or worse??

Stupid comment alert: Also, as the sidewalls will be slightly smaller, does it look any better!!

Let us know your experiences and comments guys!!

[stoocake]

I've run 195/50/15 and there is a very modest difference in accelaration. You can't calculate speedo innacuracy as an absolute figure, it'll be a percentage, but it'll only be a few % out. At 30mph there won't me much in it, but at 70mph you'll be 3-5mph out or so (speedo will read higher than your actual speed).

http://www.alloywheels.com/tyrecalc.asp

[tontvti]

You can notice the car sitting slightly lower

I do use abit more fuel now because it sits just in vtec when I cruise to work,

as for the speed difference, before I changed tyre size the speedo was spot on compared to the GPS now its

I decided to check by how much the speedo was off today with the 50 profile tyres.

Speedo ... GPS

35 .........33

60 .........56

I changed down to 50s because so much cheaper for performance tyres

DDunoo what I'll do if I get a puncture, my spare is a 55

[HotRod_07]

yeah ive done it and my speedo was 2mph lower at 30 i tested it on sat nav. worthe savings tho

[djmca]

Im running 195/45 VR15 on mine as i was advised to if lowering it. It makes it very low but a lot of people have commented that it looks better. Have a look @ my project m post and c what you think.