60 or 70 Section??
 

Ok, talking front tyre sections here ...

The standard for the SV is a 60 section i.e. 120/60 17.

A lot of race/track bikes run a 70 section.

- Who has tried the 70 section on the road?
- Why did you do it and what differences did you notice??
- Did you find it better or worse???
- If you haven't got one, have you thought about buying a 70?
- Have you had one, not liked it and gone back to 60?

I ask this as I have just changed my front tyre on my road bike and I think what I have on there now is a definite improvement.

The michelin race I had were a 70 section. To be honest the compound was a much bigger influence on the handling!

Front looked weird when they put the 60 section replacement on. So much so I asked if they hadn't got the wrong tyre on!

120/70 here, but mainly to recover height lost with the front end swap so I can't really give much of an opinion on which is better...

I've got both - I've got 120/60 bt-14's on one set of wheels & 120/70 supercorsa's on the other set. I've only ever ridden the bt-14's (60-section) on the road, but I definitely prefer the supercorsa's on the track, although this is obviously not an apples-apples comparison, I daresay I'd prefer 60-section supercorsa's to 70-section bt-14's just because of the compound, etc. so go figure :?

did you find a discarded-tyre pile at a track that offers different sizes? ;-)

If you like to buy used race rubber, as I do, then there is much greater choice in 70 section.

Quote:

Originally Posted by NedSVS (Post 1117003) If you like to buy used race rubber, as I do, then there is much greater choice in 70 section.

Its actually race rubber I took off (70 section Supercorsa) ... never have liked the way it felt at slow speed (you end up having to pull hard on the bars to stop it 'dropping in', its horrid) ... I have put a 60 section 020 on there and the bike is so much nicer to ride :)

Always used 70 profile on my SV's mainly because there is hardly any race rubber that comes in a 60 profile.

Not noticed any difference and the slow speed slower drop was minimal..i just rode faster:D

Got a 60 on my road bike and 70's on my race bikes and tbh i cant tell the difference.

oh and get on with the reorganising

:compcrash: :smt064

:D :D

Did you lengthen your GSXR forks? Reason I ask is that they're shorter than standard, so with a 70 you'd still be lower at the front than stock :) (obviously wouldn't have applied to your minitwin...) Just curious.

Blue, if the extra 10mm or so front ride height bothers you, you could just make it go away... You can lower the front by more than that without risking clashing issues. Unless you have already :)

It’s not so much the geometry change, (if anything that would make the steering lazier/nicer for bumbling around on a commute through town ;)) it’s the aggressiveness of the profile meaning the front wants to fold in at every given opportunity.

Chunky and SV650Racer, I am talking road bikes here. The two are used under such different circumstances you cannot make a comparison, a trackbike is never going to be doing a 90deg turn into a little side road at 10mph … its never going to be going round a roundabout behind a lorry/bus/car doing 15mph …

you've not seen me riding yet have you:D

Would that not be more to do with the profile of the Supercorsa, which if memory serves uses a pointier carcass than the regular Diablos? Not sure, never used one, but a little bird told me they're on the same carcass as the Rennsports. Mine's wearing a Roadtec, it's a slightly taller profile than the 60 but it's far from pointy, won't drop in like some. Some people like it the other way, I like a round-shouldered tyre though, seems to work better for half-witted corner corrections and the like.

Quote:

Originally Posted by northwind (Post 1117421) ..

Yes it is all about the profile ... :confused: Rennsports and S-Corsa are identical tyres (apart from tread pattern). The racetechs kinda superseded the Supercorsa (or at least are the next level) and just as 'pointy' as the corsa ... I have never seen a Diablo in 70 section, so can't comment, but either way it is going to have to be a sharper profile than a 60 ;)

:D :D

The same here:cool:

V good question. I`m also about to change my front and was looking at tyres for about 1/2 hour last night, wondered many of the same things and have decided to stick with what i know, i.e 60 on the front :smt023

Previously I sais this:


Cheers
Ben

I was persuaded to change to 70 on my standard bike. Loved the change, but that could have been completely down to New Tyres Syndrome. When I do the GSXR swap it will be onto a 65, as that's what it came with.

As a average rider (maybe sub average :/) i didnt like the change from 60 to 70 profile tyre , i traded my stock d220 for a pair of bt-014 , the bike fells more twitchy , and more easy to lean , but its harder to correct my lines while the bike is leaned , dont know if it makes any sense or if its due to a difrent profile on rear and front tyre , but thats just what i fell .


On the plus side , with the 70 front , if i use the front brake while the bike is leaned over she no longer trys to get up , as it did whit the d220 , also hard braking fells a lot safer , but that must be because of the better ruber on the bt-014!

Re: 60 or 70 Section??
 

Yeah I recon overall the 70 sucks a55*!!! :D

*for the road

Re: 60 or 70 Section??
 

Best not say that to our friends across the pond though. Apparently 120/70 on the SV is a God send :rolleyes:

It's all moot anyways :wink: as most of the riders that have changed to a 120/70 don't seem to have notice any difference.

Ben

Re: 60 or 70 Section??
 

I still reckon you're blaming the size for problems you're getting off the shape- if you take 2 like tyres in 70 and 60, they tend to have pretty similiar shapes... The 70's taller of course, but they keep the same characteristics. You're comparing a pointy 70 with a round-shouldered 60, maybe if you try a round 70 (020, Roadtec, Strada) you'd find your problems stop?

Re: 60 or 70 Section??
 

I am not about to buy a 70 020, Roadtec, Strada to find out!! :D But you might be right? If not stopped lessoned mibbie??