190/50 to 190/55 rear Tyre?

[Mr OCD]

Anyone done it ... ?

It is a popular mod with older R1 owners due to the new R1's running 190/55 ... on Saturday I swapped to 190/55 and am absolutely amazed with the difference.

The bike turns in effortless and seems to have more grip when cranked over on it's side ... should have done this ages ago!

Obviously I was a bit concerned about increase in rear ride height / gearing but it has not had any negative effect on the bike ... did 200 miles on Saturday on twisty roads and the bike has never felt so planted!

I cannot see me going back to a 190/50 now ... anyone see any issues with this?

[Steve Evil]

Fairly common these days, I've done it on my bike, can't see a good reason not to.

[Stevie_P]

I have a 190/55 on the back of the TL and it seems to turn in pretty quick for a big old bird.
I think it's the way to go.

[RemaL]

just fitted a 55 rear profile onto the blade after other saying is feels much better. not tried it out yet though

[Harry H]

You have to work a darn sight harder to get rid of your chicken strips though

[Mr OCD]

Harry H said:

You have to work a darn sight harder to get rid of your chicken strips though

Not really...

[moto_traxport]

I've run all sorts on my old R1 and they all alter steering feel. I'm currently on a 180/55 (mainly because it was free) which also speeds the steering up a bit.

You've probably gone from a worn out 190/50 to a new 190/55 so the difference is possibly more marked.

I've not tried a 200 section that comes on the Aprilia RSV4 yet. That's still on a 6" wheel so it would fit and work but I've an idea it might be a pig at full lean with older bikes with older geometry.

[BaronVonGrumble]

Yep, good mod to go to a 55.

BUT beware it increases your gearing, surprisingly its equaled out by changing to a +2 rear sprocket. Which means its quite noticeable! (well, this is what i found on a 2011 blade)

I ran a 60 on my k5 race bike and that was mental!

[Mr OCD]

BaronVonGrumble said:

Yep, good mod to go to a 55.

BUT beware it increases your gearing, surprisingly its equaled out by changing to a +2 rear sprocket. Which means its quite noticeable! (well, this is what i found on a 2011 blade)

I ran a 60 on my k5 race bike and that was mental!

I don't think it's actually made a great deal of difference to the gearing on the R1 as I cannot tell any difference! ... and IIRC wouldn't it improve acceleration slightly due to the change? - a bonus?

[Steve Evil]

Mr OCD said:

BaronVonGrumble said:

Yep, good mod to go to a 55.

BUT beware it increases your gearing, surprisingly its equaled out by changing to a +2 rear sprocket. Which means its quite noticeable! (well, this is what i found on a 2011 blade)

I ran a 60 on my k5 race bike and that was mental!

I don't think it's actually made a great deal of difference to the gearing on the R1 as I cannot tell any difference! ... and IIRC wouldn't it improve acceleration slightly due to the change? - a bonus?

If anything it would add more to the top-end gearing of the bike to the detriment of the acceleration.

[y2blade]

Steve Evil said:

Mr OCD said:

BaronVonGrumble said:

Yep, good mod to go to a 55.

BUT beware it increases your gearing, surprisingly its equaled out by changing to a +2 rear sprocket. Which means its quite noticeable! (well, this is what i found on a 2011 blade)

I ran a 60 on my k5 race bike and that was mental!

I don't think it's actually made a great deal of difference to the gearing on the R1 as I cannot tell any difference! ... and IIRC wouldn't it improve acceleration slightly due to the change? - a bonus?

If anything it would add more to the top-end gearing of the bike to the detriment of the acceleration.

Yep.
Same size physical gearing turning a larger OD wheel/tire = more top speed with less Acceleration.

[Yazza54]

Mr OCD said:

BaronVonGrumble said:

Yep, good mod to go to a 55.

BUT beware it increases your gearing, surprisingly its equaled out by changing to a +2 rear sprocket. Which means its quite noticeable! (well, this is what i found on a 2011 blade)

I ran a 60 on my k5 race bike and that was mental!

I don't think it's actually made a great deal of difference to the gearing on the R1 as I cannot tell any difference! ... and IIRC wouldn't it improve acceleration slightly due to the change? - a bonus?

Smaller wheel increases acceleration

[y2blade]

Yazza54 said:

Mr OCD said:

BaronVonGrumble said:

Yep, good mod to go to a 55.

BUT beware it increases your gearing, surprisingly its equaled out by changing to a +2 rear sprocket. Which means its quite noticeable! (well, this is what i found on a 2011 blade)

I ran a 60 on my k5 race bike and that was mental!

I don't think it's actually made a great deal of difference to the gearing on the R1 as I cannot tell any difference! ... and IIRC wouldn't it improve acceleration slightly due to the change? - a bonus?

Smaller wheel increases acceleration

It is not the wheel size that is relevant, it is the outside diameter of the wheel & tire combined.

[Yazza54]

y2blade said:

Yazza54 said:

Mr OCD said:

BaronVonGrumble said:

Yep, good mod to go to a 55.

BUT beware it increases your gearing, surprisingly its equaled out by changing to a +2 rear sprocket. Which means its quite noticeable! (well, this is what i found on a 2011 blade)

I ran a 60 on my k5 race bike and that was mental!

I don't think it's actually made a great deal of difference to the gearing on the R1 as I cannot tell any difference! ... and IIRC wouldn't it improve acceleration slightly due to the change? - a bonus?

Smaller wheel increases acceleration

It is not the wheel size that is relevant, it is the outside diameter of the wheel & tire combined.

Yesyesyes

It put my NC30 speedo quite a way out with a 17 inch wheel from the RVF.

Edited by Yazza54 on Monday 17th September 12:42

[Mr OCD]

We agree the difference will be neligable though?

[y2blade]

Mr OCD said:

We agree the difference will be negligible though?

You asking or telling?

[Steve Evil]

Mr OCD said:

We agree the difference will be neligable though?

Yeah, it's not going to be huge, although the latest issue of PB suggests that by adding a 190/55 tyre to a Hayabusa it took the maximum speed up from 186 to 192mph, as it caused the speedo to under-read and got around the speed limiter that way.

[Yazza54]

Mr OCD said:

Harry H said:

You have to work a darn sight harder to get rid of your chicken strips though

Not really...

Nothing to do with them being part worns that R1 Loon has had on track

[Hooli]

y2blade said:

Mr OCD said:

We agree the difference will be negligible though?

You asking or telling?

Are we bored enough to work it out children?

According to this website http://www.club80-90syncro.co.uk/Syncro_website/Te... The difference is 3.1%.

[Mr OCD]

Yazza54 said:

Nothing to do with them being part worns that R1 Loon has had on track

At least they are smooth now without massive clumps of rubber stuck to them...