View Full Version : 120/70 Tyre
Hi
Has anybody tried using 120/70 to replace the original,Have one in the garage that would match the Conti on the back?
Matt-EUC
19-09-13, 06:39 PM
A lot of people do it. It makes for a very quick turn in.
Sid Squid
20-09-13, 09:51 AM
On which bike?
I think we should be told.
Matt-EUC
20-09-13, 09:53 AM
Initial assumption is that it would be an SV.
Blueperson
20-09-13, 10:34 AM
I fitted one recently. It makes for a slower turn in (and a tad more stability at speed) as the headstock now is marginally higher. Easily returned to standard geometry by dropping fork legs through yokes by 6mm. On conti-motions.
Blueperson
20-09-13, 10:36 AM
PS - looks better too...fits the mudguard better :-)
Matt-EUC
20-09-13, 10:40 AM
A taller tyre making for a slower turn in? That doesn't make sense. It may be true I haven't tried it myself but thinking about it, it makes more sense for a taller tyre to turn in sharply. If, for example you were to put a 120/50 on, it would more than likely turn in much slower, even lazy, but be very stable at high mid-corner speeds.
Fitted a conti to my curvie .It was fine,
Diid it turn better ,Well yes .
It was more rounded than the one I replaced that was worn on the edge's.
Citizen
23-09-13, 06:23 PM
Was offered one last week for my curvy as it was the only size available in a pilot road 3, decided against it for no reason really just thought the mudguard would or could be an issue and so preferred to fit like for like.
Plus wasn't in a rush and was happy to wait.
ChrisCurvyS
24-09-13, 09:24 AM
I've got one - fits the mudguard fine but if you've got an extended bit it will probably have to come off.
The turn-in felt alarmingly quick at first but you soon get used to it like anything else and I think it provides a bit better front-end grip on the limit.
granty92
24-09-13, 10:56 AM
i have one too :) turns in much better i feel :D
On mine(52) it cleared the fenda extendeder fine.
yorkie_chris
24-09-13, 09:25 PM
It's a subtle change, not night and day.
Of course everyone who tries it only takes off a completely fooked tyre that's this _/ shape on each side and then says it turns in loads and loads faster.
Sometimes they rub mudguard, usually you get away with it by loosening bolts a bit and shuffling it round to sneak an extra fag paper of clearance at the back.
Matt-EUC
24-09-13, 09:30 PM
I for one always love riding a new tyre. And as you say it feels a lot sharper on turn in. I can't imagine the feeling of a 70 after a square front.
yorkie_chris
24-09-13, 10:03 PM
It's a lot like the feeling of a 60 after a square front.
Matt-EUC
24-09-13, 11:22 PM
Only more pronounced I'd imagine.
Back in 01-06-2010 tovar mesured the hight of some tyres.
"Just because one tire is stamped 120/70 and other 120/60 does not mean there is 12mm difference. Only way to know exactly is by measuring both.
Michelin 120/60 tire measurement is 600.4mm and a pirelli 120/70 and its measurement is 598mm.
Michelin Power Race front 120/70 - 599.4mm
Michelin H2 Front 120/70 - 606.27MM
Michelin Street Sport 120/70 - 600.54MM
Metzeler Sportec Front 120/70 - 598.32MM
Bridgestone 012 120/70 - 601.82MM
Dunlop D208GP 120/70 - 597.45MM"
So its not as straightforward as you might think
Matt-EUC
25-09-13, 08:11 AM
Err... Yeah, that.
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