tyre dilemma..

[vifferman]

Yes Yes ya beat me by a milli second

That's alright - you beat me with the profile thing (deleted it from my post).
I don't think mixing the profiles is that big a deal, but mixing brands and types can get a bit weird. The profile shape does make a big difference though - a triangular-ish profile means the bike tips in quick, but can feel a bit insecure when leaned over, depending on how rounded the shoulders are. I've had three lots of sport-touring rear with sports front profile, and it works well, because the tyres wear out evenly and you get the quicker turn-in and extra grip in the front, with good wear in the rear.

On my VF500 it never had anything other than mixed tyres. Started off with a Metzeler front and horrible oversized IRC rear, then went to a Avon rear, then Dunlop front (horrible triangular tyre, with bad headshake), then a Metzeler front again (quite round in profile). The Avon was very hard, and was on the bike for about 4 years, still on when I sold it.
I don't think the mix'n'match thing mattered that much though, as the wheels were too - 16" front, 18" rear.

[White trash]

Get BT014s. They're easily as good, if not better than an Diablo.

[Ixion]

Pedantic note, cos I'm a pedantic shit sometimes.

Dropping/raising the forks in the yokes won't completely compensate for a change in tyre diameter. It will restore the head rake angle, but the fork trail and effective rolling diameter will still be different. Whether you'd notice a difference between 65 and 70 is another matter.

Also you can't compare two different brands on a sizing basis. One manufacturer's 120/70 might actually have a lower effective rolling diameter than another manufacturers 120/65. You need to check the manufacturers specs and get the actual rolling diameter.

Pedantic mode off. And I'm probably totally wrong and talking shite anyway. I got really into this stuff decades ago and learned heaps about it, and now I've forgotten it all, cos I figured it was easier just to learn to ride better than mess about with the bike geometry

[bugjuice]

nah, you make sense Ixion, don't worry..
Just talking to a racing buddy now, he was saying that the 65 to 70 won't be a huge jump (like 60 to 70) so I should be ok and not notice much, so I can deal with it until the summer and I get a decent pair matched. This '70' tyre is the same brand as what I have now, I have an 012 and this is an 011. He said that cos of the extra rotation, it might get a little more twitchy at speed (at which point, I'd be doubling the speed limit and then some, so won't be a problem), but the turn in would be a touch more grippy..

thanx for the concern tho

[bugjuice]

sorted for now:
http://www.trademe.co.nz/Trade-Me-M...on-29415821.htm

That should have enough left on it to last the same as the back tyre, then they can get done together..

thanks guys

[Lou Girardin]

A few people have gone from 60 series to 70 on R6's to calm down the steering. I'm not sure that the effect will be the same with Kwakas, but I suspect it will.

[bugjuice]

A few people have gone from 60 series to 70 on R6's to calm down the steering. I'm not sure that the effect will be the same with Kwakas, but I suspect it will.

huh.. interesting.. I thought it'd be the other way, cos the 60 has/should have a softer curve over 70s..

[Brian d marge]

Michelin make good tyres....

Sorry couldnt resist

Stephen

[sAsLEX]

I pretty much only have mismatched tyres as well. The mo i have a diablo corsa i think on the front and a 014(which I got for a bargin, visit CYCLETREADS!) on the back. I find my fronts always wear real triangly and they start to tip in real fast once all the tread on the sides has worn away!

[Marmoot]

my front tyre is wearing thin,

the proof of wheelieinability?

sorry...sorry....couldn't help it.

This thread reminds me that my front has no more thread and I need that new 014 too.....pronto
(or 012SS? )

[bugjuice]

the proof of wheelieinability?

sorry...sorry....couldn't help it.

This thread reminds me that my front has no more thread and I need that new 014 too.....pronto
(or 012SS? )

surely it'd be lack of, wouldn't it...?? keepin the front wheel up..??
it could be for stoppies, but I can't really get much higher than an inch or two, but I'm not trying for those just yet
and don't say sorry!!!

[Marmoot]

it could be for stoppies

LOL, nice comeback.

[sAsLEX]

surely it'd be lack of, wouldn't it...?? keepin the front wheel up..??

ever seen a jumbo land with a big cloud of rubber? Deaths front does similar if the front has been up a while and slowed down a bit, poof of blue smoke when it lands

[DingDong]

Pilot Power... for ya set tho

[Two Smoker]

If you want the real cheap option, wait till after this weekend, and ill sell ya my Supercorsa Pro SC1 120/70 REAL CHEAP!!! Im not joking... i will...