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Author Topic: 550 tire size  (Read 1297 times)

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Offline Jay B

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550 tire size
« on: October 07, 2007, 06:48:06 AM »
I appologize in advance for another tire thread, but I haven't found a definitive answer searching. Looking for new tires for my '77 550k. A 120/90-18 seems to be the right size for the rear, but which is the best size for the front, a 100 or 110/90-19? TIA
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Jay
'77 CB550K
'74 CB350F cafe
2001 Road King
'73 CB175

Offline TwoTired

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Re: 550 tire size
« Reply #1 on: October 07, 2007, 08:48:09 AM »
The stock rims are 1.85 inches wide.  What manufacturer told you a 120 size tire fits on this rim?

A 3.25 front and a 4.00 rear will give you all the traction you need to scrape pegs and other bits o bike.  And, your bike will retain the sweet handling it is known for throughout the life of the tires.

Cheers,
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Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

jesus freek

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Re: 550 tire size
« Reply #2 on: October 07, 2007, 10:35:21 AM »
JAY B
First of all Cool lookin bike.I dig the seat.I too have a cb550 it is a 75.I too am lookin to put new rubber on there. I did a search on here last night and its seems as though 1/2 stick and swear by stock and the other 1/2 upgrade one size up.I was in the bike shop this week and they said to stay with the manufacture size.I seen a guy on ebay selling his cb550 with a 130/90/18 on it.I emailed him asking of any clearance issues and he said it rode fine and it cleared everything fine.He did though have a bobber stlye frame.I too wanted a 130 on there and the dealer laughed.NOT A GOOD SIGN.
Oh well everyone is entitled to an opinion.I was lookin through some past threads and seen a guy was in the shop and seen three tires mounted to spoke rims a 120/90 and a 120/80 both 18s and the 90 looked huge.I did not know there was that much of a difference between sizes.I am working on a budget [TIMES ARE TIGHT HERE IN MICHIGAN] of 1000.00 bucks bike included.I do know alot rides on your tires so I will probably go with CHENG SHINS HI MAX a 100/90/19 and a 120/90/18
GORDON
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