aspect versus width in handling

[Yukonica]

Bridgestone BT45 is available in 100/80/18 or 110/90/18
Lower aspect should slow the steering a little but what will the wider tire do for handling?

Bridgestone's catalogue also lists 100/90/18 but I haven't seen it advertised online in a couple years,

[rodekyll]

The 100/80 is a shorter tire as well as narrower.  It will bank over center faster and also add twitchiness to the steering.

[jacksonracingcomau]

Bridgestone BT45 is available in 100/80/18 or 110/90/18
Lower aspect should slow the steering a little but what will the wider tire do for handling?

Bridgestone's catalogue also lists 100/90/18 but I haven't seen it advertised online in a couple years,

Is the other way round low aspect effectively smaller wheel, quicker steering.
All other things equal 100/80 will turn quicker than 110/90
Personal preference, either will fit 2.15 rim
I would go the 100/80 but others will say 110/90 is better for them, maybe for high speed interstate travel it is.
RK  beat me to it

[Yukonica]

Thank you both for the answers. Beats the heck out of flipping a coin.

[Warren Rhen]

I want the stickiest front tire that I can get for my Stornello. It seems there is, arguably, no newer technology available better than the sport demons. However for the front tire I see there is a V-rated 110/80-18 available. I think this should be about the same overall  dia but slightly wider. First has anyone tried this? Any clearance problems? Will this slow my steering noticeably?

[Yukonica]

I want the stickiest front tire that I can get for my Stornello. It seems there is, arguably, no newer technology available better than the sport demons. However for the front tire I see there is a V-rated 110/80-18 available. I think this should be about the same overall  dia but slightly wider. First has anyone tried this? Any clearance problems? Will this slow my steering noticeably?

My V7s came with Pirelli Demons in an H rated 100/90/18.
Read what RK and the Racer just wrote: short aspect = quicker steering. Do you want that?
Drop your forks 20 mm in your steering head to find out.
I don't think you'll gain any adhesion by moving to a V rated tire. Speed ratings are about the ability to disperse heat.
Speculatively the H should heat-up faster and therefore actually offer better adhesion in its operating range.
~ hopefully someone who actually knows what they are saying will chime in ~

[pressureangle]

Having roadraced for 20 years, my instinct is always at odds with my experience; on-track, wider tires translate to ultimate traction- sometimes at the price of a bit of handling.

My street experience, earned by years and dozens of oversized regrets, is that the smaller of two appropriate choices is always the better one. Particularly on small, light motorcycles. I put a 110 on my '85 LeMans, now again sorta wish I'd have done the 100. It is an 18" rim, though. Installed a 100 on my '74 Aermacchi/Sprint 350 and wish it was a 90.

[guzzista]

My street experience, earned by years and dozens of oversized regrets, is that the smaller of two appropriate choices is always the better one. Particularly on small, light motorcycles. I put a 110 on my '85 LeMans, now again sorta wish I'd have done the 100. It is an 18" rim, though. Installed a 100 on my '74 Aermacchi/Sprint 350 and wish it was a 90.

+ 1.  in my case, my Cali got a 100/90-18 instead of the 110 on front , and both my tribute bike and LM1 got 90/90-18 instead of the 100/90-18.  A bit quicker steering on all, no adverse high speed handling/ wiggles noticed

[Murray]

I want the stickiest front tire that I can get for my Stornello. It seems there is, arguably, no newer technology available better than the sport demons. However for the front tire I see there is a V-rated 110/80-18 available. I think this should be about the same overall  dia but slightly wider. First has anyone tried this? Any clearance problems? Will this slow my steering noticeably?

Avon used to do some performance options in older sizes I haven't looked in some time the Super Venom used to be the go to of the range.

[Chuck in Indiana]

In your size..
https://www.americanmototire.com/street-cruiser-touring/continental-conti-road-attack-3-100-90r-18-56v-radial-front-02445000000-mc.html

"You *vill* like them.." 

[jacksonracingcomau]

Avon used to do some performance options in older sizes I haven't looked in some time the Super Venom used to be the go to of the range.

They now make a track compound roadrider am26 in classic sizes, control tyre for british classic racing.
Sticky as.
As said speed rating is exactly that, not a stickiness rating. Z rated touring tyre not as soft as racing H rated but will withstand very high speed
Soft tyres wear out faster

[wirespokes]

It's best getting the tire rated for the use expected. A race tire is not a good choice for the road. High speed rated tires usually have, among other things, less rubber so they wear out quicker. Burt Munro who rode the Fastest Indian (200 mph) made his own high speed racing slicks on the cheap: cut off all the tread from a road tire. He certainly knew a lot of tricks!

There is a chart somewhere (I think it's in Guzziology) giving the dimensions of different size tires. My guess is the 110x80 would give slower turning. My 87 LM had a 110x80 and steered like a truck. I had to force it to turn and it didn't want to stay leaned over. Installing the 100x90 made  a night/day difference - steering is quick and effortless. It transformed the bike.