CBR 1000F "Hurricane" 1987-1996 CBR 1000F

Bigger tyre not better

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Old 09-28-2006, 03:51 PM
Nelson's Avatar
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Default Bigger tyre not better

Just had new chain, sprockets and rear tyre fitted to my '99 F-X. The chain was a DID 530 ZVM2 114 link - the sturdiest and best quality in my opinion. The previous owner/dealer had removed a link from the old chain in order to maintain tension if you can believe that. As a result, to get the right tension the rear axle was about 1 inch further forward than it should be, giving a short wheel base.

Anyway, a couple of interesting points:

1. From '96 onwards, Honda dropped a tooth on the rear sprocket - down from 42 to 41 (front still 17T). Any ideas as to why this was? Better cruising in top gear?

2. For the rear tyre, I decided to go back to the original 170/60 fitment. It was fitted with a 180/55 before by the previous owner. This wider tyre had worn a groove into the inside of the chain guard. Anyway, the handling of the bike has improved no end with the smaller tyre fitted. The bike changes direction so much better than before (especially in fast rounabouts/rotaries for us in the UK).

So, if you can cope with a slightly narrower rear tyre width, it's worth it as far as I'm concerned (the 170/60 is still a wide tyre to look at).
 
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Old 09-28-2006, 04:16 PM
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Default RE: Bigger tyre not better

A friend of mine has an Aprilia tuono and has changed from the 190 to the 180 for that reason.

Hey! With all of your clockwise round abouts, do you notice any more wear on the right side of the front tire? Maybe you can trade out with the guys with the CCW roundabouts at 1/2 tire life to get even wear. (just joking)
 
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Old 09-28-2006, 04:37 PM
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Default RE: Bigger tyre not better

good idea! Yep, the right side usually gets scrubbed almost upto the sidewall, while the left side (with me at least) always seems to have 1/2 inch of pretty much unscrubbed rubber left on it.

I guess Honda chose the 170/60 for a reason.
 
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Old 09-28-2006, 09:55 PM
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Default RE: Bigger tyre not better

At a guess I would say that they realised the CBR was no longer a "Sports" bike so they made it with a 41 tooth to make it smoother and use les fuel like any good tourer should.

 
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Old 09-29-2006, 07:28 AM
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Default RE: Bigger tyre not better

Changed my tyres last month and went for a standard -170 section- rear tyre, couldn't agree more with you handling is so much easier. Also ditched McAdams for Mez4's, this may have helped as well. Take it the wear on chainguard would be due to "shortened wheelbase".
ORIGINAL: Nelson

Just had new chain, sprockets and rear tyre fitted to my '99 F-X. The chain was a DID 530 ZVM2 114 link - the sturdiest and best quality in my opinion. The previous owner/dealer had removed a link from the old chain in order to maintain tension if you can believe that. As a result, to get the right tension the rear axle was about 1 inch further forward than it should be, giving a short wheel base.

Anyway, a couple of interesting points:

1. From '96 onwards, Honda dropped a tooth on the rear sprocket - down from 42 to 41 (front still 17T). Any ideas as to why this was? Better cruising in top gear?

2. For the rear tyre, I decided to go back to the original 170/60 fitment. It was fitted with a 180/55 before by the previous owner. This wider tyre had worn a groove into the inside of the chain guard. Anyway, the handling of the bike has improved no end with the smaller tyre fitted. The bike changes direction so much better than before (especially in fast rounabouts/rotaries for us in the UK).

So, if you can cope with a slightly narrower rear tyre width, it's worth it as far as I'm concerned (the 170/60 is still a wide tyre to look at).
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