**Unofficial Tyre Thread**

Love my F1A2s. So much grip and seem to be wearing alright too. 7 months, a trackday and almost exclusively A road driving in a 320bhp car with around 4mm on rears and 5-6mm left on fronts.
 
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Love my F1A2s. So much grip and seem to be wearing alright too. 7 months, a trackday and almost exclusively A road driving in a 320bhp car with around 4mm on rears and 5-6mm left on fronts.

Hence their popularity! I have them on the front of my Octy vRS, but need some on the rear now and not sure what other credible website to use, that isn't Camskill or Blackcircles
 
I just fitted some Continental CS5s on my 1 Series - great handling and grip, even in the wet. Too early too give advice on tyre wear though, I've only done 100 miles on them :P
 
Looking at my next potential car purchase I thought I'd see how much tyres were.

More than I was expecting!

205/45/17 = £112.40

Is it possible to fit a more popular cheaper size tyre such as:

215/45/17 = £98.20
 
So if I were doing 100mph it would only read 1.64% lower? Which is 98mph!
That wouldn't even bother me, and I'd rather have the £ in my pocket!

At an average speed of 40 it would read at 39...

Not according to this website.
http://www.kouki.co.uk/utilities/visual-tyre-size-calculator

"With this combination your speed will be 1.5% greater than indicated."
"When your speedo reads 30mph you will actually be doing 30.4mph."
 
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