Yup - I've had 205*50*15 on the front and 225*50*15 on the back when the car was a Stradale but now it's Gp4 I went to 345*35*15 and 225*50*15s
Guy
Can someone remind me:
For road tyres (rather than the 215 TBs) is it normally 205/50 x 15.
Or some other size? It's the aspect ratio I can't remember.
'Don't like the rolling diameter too small.
Yup - I've had 205*50*15 on the front and 225*50*15 on the back when the car was a Stradale but now it's Gp4 I went to 345*35*15 and 225*50*15s
Guy
I can agree with Guy on that one - I had 205-50-15's front & 225-50-15 on the rear when I had my last car..
Thanks chaps.
Any more votes for 205 50 ?
I don't know what the 215 TBs are for side wall ratio?, but that's the kind of side wall height/rolling diameter I prefer.
205-50-15 is aprox 586mm diameter.
Thanks Neil.
So a
205-50-15 is 586mm
215 TB15 is 612mm
I've also got (for 205)
55 ratio at 606mm and
60 ratio at 627mm
So maybe 205-55-15 would still be smaller diameter than a TB Michelin?
I get ~607mm for the 205-55-15 which is more or less the same as the tyres you are replacing.. you wount notice 5mm difference ( its less than the diameter change due to tread wear.
Also as you can see from my spreadsheet the actual tyre sizes do not always exactly match the theoretical diameters either.
Michelin Racing Size Designation Road legal sizes Rolling Circumference Recommended Rims 16/53-13 175/60R13 72V 1640 mm 5 to 6 inches 20/53-13 225/45R13 77V 1635 mm 7 to 8,5 inches 15/60-15 170/65R15 77V 1847 mm 5 to 6 inches 18/60-15 215/55R15 79V 1885 mm 6 to 7.5 inches 23/62-15 270/45R15 86V 1923 mm 8.5 to 10.5 inches 26/61-15 295/40R15 87V 1891 mm 10 to 11.5 inches 29/61-15 335/35R15 93V 1903 mm 11 to 13 inches
Michelin TB15 sizing..
205 / 50 x 15" on my front
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