what is the fattest tire size?

what is the fattest tire size? 27 Jun 2006 01:10 #57434

kzmarvo Topic Author Offline User Posts: 344 Thank you received: 0	Friend of mine was wondering what the fattest tire size that will fit a 77 900? I have yet to get my bike but that bunofasich bought him a 1977kz900 just like the bike i am waiting on. He was wondering what the fattest tire is that will fit between the swing arm. Watch it folks,i have sticky fingers when it comes to a nice looking set of handle bars:)
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what is the fattest tire size? 27 Jun 2006 04:34 #57441

btchalice Offline User Posts: 760 Thank you received: 7	140/90 Terry Meyer / Wichita KS 76 kz900 w/1000 motor TWZTD I am not driving too fast, I'm flying too low.
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what is the fattest tire size? 29 Jun 2006 01:52 #57978

zero psi Offline User Posts: 21 Thank you received: 0	is that the same for a '75 kz400?
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what is the fattest tire size? 29 Jun 2006 05:01 #57992

Biquetoast Offline User King Jeremy The Wicked Posts: 1193 Thank you received: 7	zero psi wrote: is that the same for a '75 kz400? I wouldn't put a 140 on a '75 400. Of course, I've never tried, I just don't think it looks like there's room in there. Lots of chain-rubbing... (1.) '75/'76 KZ400D - Commuter (2.) '78 KZ750B3 Twin - Commuter (3.) '78 KZ750B3 Twin - Commuter (4.) '75 KZ400D - Sold kz750twins.com
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what is the fattest tire size? 29 Jun 2006 09:39 #58062

brianrae33 Offline User Posts: 318 Thank you received: 0	so that should hold true for a 78ltd1000 as well?? 1982 kz1000ltd
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what is the fattest tire size? 29 Jun 2006 10:10 #58071

zero psi Offline User Posts: 21 Thank you received: 0	thats what i figured. there isn't much room back there. Mabye i'll just stick with the stock size for now.
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what is the fattest tire size? 29 Jun 2006 16:34 #58139

richie1 Offline User Posts: 24 Thank you received: 0	hate to jack the thread but wahst the fattest tire i can put on my bike?rear?
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Aside from style, too fat for rim = not good 29 Jun 2006 19:32 #58165

Duck Offline User e vica na i sau na ga Posts: 1267 Thank you received: 35	Here hondaman and a guy who works for kenda comment on tire sizes. Context is Honda but some good info there. I learned that side tread pattern greatly influences drift and also that there is this thing called a trigonometric tire. Didn't have that stuff 35+ years ago. XXXXXKawPen:the other green meat
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Aside from style, too fat for rim = not good 29 Jun 2006 21:31 #58190

mark1122
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I had a 130 on mine and it filled the swing arm up pretty well.But I read an article in an old cyle mag that did a test on putting a size larger than stock on a bike rim .They found that the oversized tire did not handle as well as the intended size.ANYONE OUT THERE NOTICE ANY DIF.?

76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

~ ~ ~_@
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~ (k) / (z)

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Aside from style, too fat for rim = not good 01 Jul 2006 06:42 #58474

mariozappa Offline User Posts: 901 Thank you received: 8	I went from a 120 to a 130 on my C1, and to me, it seems to handle better in the corners. Maybe thats just me. Post edited by: mariozappa, at: 2006/07/01 09:43 1977 KZ650C1 and the KZ650/KZ750 Conversion
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Aside from style, too fat for rim = not good 01 Jul 2006 06:54 #58475

duncan Offline User Posts: 194 Thank you received: 2	mark1122 wrote: ...But I read an article in an old cyle mag that did a test on putting a size larger than stock on a bike rim .They found that the oversized tire did not handle as well as the intended size... that would not surprise me. the more i modify my cars and bikes, the more respect i have for factory engineers. (but i still modify them anyway )
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Aside from style, too fat for rim = not good 01 Jul 2006 06:56 #58476

BohicaBob
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It is a wise practice to never mount a tire larger than the rim was designed to support. This is very important safety and handling issue.

And, of course, you may have another issue: the larger tire interfering with your swingarm. On my '78 KZ1000, I run a 130 X 18" Bridgestone SE11 rear tire on a DID 3.00 X 18" rim and there is very little clearance between this tire and the engine-side of the stock swingarm, so much so that if I don't have the rear wheel properly centered, the tire will rub against the swingarm.

KZ1
Z1-900
KZ2