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SV650.org - SV650 & Gladius 650 Forum (http://forums.sv650.org/index.php)
-   SV Talk, Tuning & Tweaking (http://forums.sv650.org/forumdisplay.php?f=111)
-   -   Wider rear tyre? (http://forums.sv650.org/showthread.php?t=150971)

mister c 03-05-10 06:23 PM
Re: is bigger better
 
Quote:
Originally Posted by bald git (Post 2259223)
raise the forks in the yoke by 5mm to get it all back.
Nah, drop them down & turn in faster ;)

bald git 03-05-10 07:53 PM
Re: Wider rear tyre?
 
raising the forks in the yokes, lowers front, decreases rake which in turn makes the steering quicker.....FIGHT !!!!

yorkie_chris 03-05-10 08:40 PM
Re: Wider rear tyre?
 
You both saying same thing.

Anyway it is all bollox. Until you fix the innate issues present IMO you chasing your tail with such shenanigans.

bald git 03-05-10 09:30 PM
Re: is bigger better
 
Quote:
Originally Posted by mister c (Post 2259324)
Nah, drop them down & turn in faster ;)
so in reality you drop your forks you increase the length of your bike, just like dennis hopper with his chopper, in easy rider which needed the whole of the freeway to turn in. i,m saying raise the forks, so how can that be the same. as you say chris its, bollox. a tyre with the same height, same aspect ratio but 10 mm wider is going to make that much difference, end of.:smt014

yorkie_chris 03-05-10 09:45 PM
Re: Wider rear tyre?
 
You contradict yourself there,
If tyre is same height but 10mm wider... it cannot by definition have same aspect ratio.

bald git 04-05-10 05:17 AM
Re: Wider rear tyre?
 
160 x 60 x17...... 170 x 60 x 17, same o/a tyre height, say 6 inches on both tyres,the height as in avon chart, 60 is aspect ratio or height of sidewall, surely these are same, its just width thats different.

cb1000rsteve 04-05-10 05:31 AM
Re: Wider rear tyre?
 
Its got something to do with percentages across the section of the tyre. Not like a car tyre where a 190 tyre is 19cm wide and a 205 is 20.5 cm wide. The 170 will be slightly taller, not enough that you'd notice. i'm fitting 170 rears as i just got 2 pairs of tyres for £160 delivered. 170's where cheaper than the 160's. I'll also be fitting 180's through summer as i get Pirelli BSB tyres for £60 a pair. yeah there may be a slight difference but for the price i can easily live with it.

lukemillar 04-05-10 06:09 AM
Re: is bigger better
 
Quote:
Originally Posted by yorkie_chris (Post 2258960)
Blue650S posted a pic on here of his tyre which was apparently a few 10ths of a second off minitwin lap record pace.
:lol: I don't think so

But you're right about not using the entire tyre.

However...

I have just stuck a 190 on my 675 for race next weekend. Apparently most of the supersport guys here run 190's on bikes that come with 180's as stock. Trade off is a slower turn in but you can get on the throttle earlier/with more lean without it spinning up.

Will see what it's like after raceday :)

That said, most people also acknowledge that it is a waste of time on the road.

BigBaddad 04-05-10 06:51 AM
Re: is bigger better
 
Quote:
Originally Posted by BigBaddad (Post 2258883)
The Height of the profile i.e. in this case 60 is the % of the width. So 60% of 170mm is bigger than 60% of 160.

as I explained on page1

yorkie_chris 04-05-10 07:58 AM
Re: is bigger better
 
Quote:
Originally Posted by lukemillar (Post 2259740)
:lol: I don't think so

But you're right about not using the entire tyre.
He did not in fact say it was his tyre, thinking about it

Suffice to say the thing was pretty well melted, except for a small band,


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