Effect of change from 190/180 to 160 tyre?

[R-Soul]

Hi all
I recently had a puncture form a screw in teh back tyre. I had to chuck away a relatively new Pilot road 2. the dealer offereme a veyr cheap replacement 160 that was off a crash bike (with minor damage) . It looked ok on the rim, so I took it.

I want to know what effect eth change fo thikcness will have?
Anybody?

It does seem to turn in easier...

[blackdog]

im guessing you'll have thinner chicken strips........

[riffer]

What the hell did you chuck away a tyre with a hole in it for? A mushroom plug puncture repair makes it perfectly good to use. You should only throw it away if it has stuffed the sidewall. As for the 160 it'll be okay, but it will make the bike a bit skittery.

[MSTRS]

The tread will be flatter across the tyre, and although it will tip smoothly, you will be on te very edge of the tread before you have achieved a full lean angle. If you ride like a nana etc, it shouldn't be a big problem. Just don't expect squid performance.

[AllanB]

Mrs B tells me that it is common knowledge that the width of your rear tyre is directly related to the size of your penis. I'd be inclined to take that tyre back and punch the seller in the face.

[mouldy]

It will square off as it is made for a 4.5" rim not the 5.5" of the VTR . If pushed hard it will step out as you ride off the edge of the tyre .

[AllanB]

You know that crashed bike it came off ..... it crashed due to a undersize rear tyre!


Ok I made that up, but .................

[Katman]

As riffer said, if the puncture was in the treaded part of the tyre and not made by an overly large object I'd be going in and asking for the tyre back (which they've probably since sold for way more than the amount they sold you the 160 for). A mushroom plug fitted from the inside will be prefectly acceptable for the rest of the tyres life.

[Mishy]

Um, not a good suggestion I'm afraid, and only really an option if there you are stuck with nothing else.
The 160 will flatten it's contour far too much on the larger rim that the 180 and 190 are designed for, which isn't so bad for durability because of the increase in the size f the zenith of the tyre, but really leaves you short on contact patch at any sort of lean angle, and short of grip because of that.
I wouldn't be pushing the thing right now, and it would be best to get the correct size tyre back on a.s.a.p

[R-Soul]

What the hell did you chuck away a tyre with a hole in it for? A mushroom plug puncture repair makes it perfectly good to use. You should only throw it away if it has stuffed the sidewall. As for the 160 it'll be okay, but it will make the bike a bit skittery.

Yeah teh bike shop tried averything they could to save it - but it would not seal - the screw had gone in diagonally and close to side wall apparently.

[R-Soul]

Um, not a good suggestion I'm afraid, and only really an option if there you are stuck with nothing else.
The 160 will flatten it's contour far too much on the larger rim that the 180 and 190 are designed for, which isn't so bad for durability because of the increase in the size f the zenith of the tyre, but really leaves you short on contact patch at any sort of lean angle, and short of grip because of that.
I wouldn't be pushing the thing right now, and it would be best to get the correct size tyre back on a.s.a.p


I only go for more leisurely weekend rides at street legal speeds , and commuting. So I guess I do ride like a nana on it (or will do for the time being- but have track days planned for next year). I hope to have new tyre before then.

[F5 Dave]

As a note the 190 was overtyred (unless they have a 6" rim). I'd bet on a 5.5" (will be on rim) it should require a 180

[Taz]

Mrs B tells me that it is common knowledge that the width of your rear tyre is directly related to the size of your penis. I'd be inclined to take that tyre back and punch the seller in the face.

I've only got narrow tyres on all my bikes. Oh and I've got a really small penis....... :o

[vifferman]

As a note the 190 was overtyred (unless they have a 6" rim). I'd bet on a 5.5" (will be on rim) it should require a 180
Yeah, the standard FahrtSturm rear tyre is a 180.

[John_H]

A bit of an idiots question here but why do larger engined bikes have wider tyres on them?

[Warr]

What he said....

... I'd be inclined to take that tyre back and punch the seller in the face.
Your bike is designed for a 180 I wouldnt mess about with anything than what its designed for.
You propose that somewhere in the future you want to get onto the track... I recon it would be best to get familiar with the bike with the correct rubber on it else if it catchs you out u'r down the road on your arse.

[LBD]

A bit of an idiots question here but why do larger engined bikes have wider tyres on them?

Pay attention.....Riders of large engine bikes have bigger tackle.....obvious if you read the earlier posts.

[R-Soul]

A bit of an idiots question here but why do larger engined bikes have wider tyres on them?

I understand that larger tyres have larger contact patches, through which larger torques can be transmitted to the road. Which is why I am not too worried about using a 160, since I have no intention of scrabbling out of corners at full throttle (at least for while).

[Mishy]

I understand that larger tyres have larger contact patches, through which larger torques can be transmitted to the road. Which is why I am not too worried about using a 160, since I have no intention of scrabbling out of corners at full throttle (at least for while).

i see your point, but the effect on the contour of the tyre will have a way bigger effect on the way the tyre performs than just grip on the exit if you are really fanging it.
You will get a much flatter shape, and it will effect everything from gearing, to ride height, to weight distribution, all of which could mess upthe way the bike steers in quite a big way.
Not reccomended - but your choice in the end.

[R-Soul]

i see your point, but the effect on the contour of the tyre will have a way bigger effect on the way the tyre performs than just grip on the exit if you are really fanging it.
You will get a much flatter shape, and it will effect everything from gearing, to ride height, to weight distribution, all of which could mess upthe way the bike steers in quite a big way.
Not reccomended - but your choice in the end.

Thanks for the advice. I appreciate that those things would affect performance at eth top end o fteh scale (although my gearing selection is arrived at by ear anyway).
I was more wondering (with this thread) if there was anything seriously bad that would happen - like tyres deflating unexpectedly, speed wobbles, etc that I should be aware of, that would happen in normal commuter type driving?

But my finances dictate that I pretty much have to ride on this for a while until the budget allows for another new 180. At low performce requirements, the 160 will hold out for a while. I am not going to be anywhere near the limits of grip on it. At this stage I am more worried about replacing the front tyre (where the tread is getting low)...

[FROSTY]

gimme a yeodle dude--I can prolly russle ya up a 180 for your bike.---metzler/dunlop at a sharp price

[R-Soul]

gimme a yeodle dude--I can prolly russle ya up a 180 for your bike.---metzler/dunlop at a sharp price

Thans Frosty

I will conatct you when finances are in order again...

[sinfull]

Way too small a tyre , i'd be gettin it off before you have a get off ! It aint just at the top end ya have to worry, it's the numpties that try and take ya out while commuting ! That tyre will not let you manouver the bike like it should, yr imagination should do the rest but if the saying walking on thin ice in gumboots means anything to ya !