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Old 02-18-2008, 05:47 AM   #1
Pre-K
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Heavy wheels/Heavy steering?

Rode an '06 GSXR600 today with some HEAVY wheels (chromed and lots of unneccessary spokes and blades and junk, for coolness I guess). They praly weighed about 5lbs more than stock...

I would have thought the bike had about 5psi in the front tire because the steering was SOOOOO frikkin' heavy. It turned better when I steered more with my feet and knees, but still.

Does a little wheel weight really make all the difference? The bike was otherwise stock and was in good shape so I'm guessing the wheels were the culprit.

Any thoughts?
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Old 02-18-2008, 07:12 AM   #2
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Quote:
Originally Posted by Pre-K View Post
Rode an '06 GSXR600 today with some HEAVY wheels (chromed and lots of unneccessary spokes and blades and junk, for coolness I guess). They praly weighed about 5lbs more than stock...

I would have thought the bike had about 5psi in the front tire because the steering was SOOOOO frikkin' heavy. It turned better when I steered more with my feet and knees, but still.

Does a little wheel weight really make all the difference? The bike was otherwise stock and was in good shape so I'm guessing the wheels were the culprit.

Any thoughts?
Assuming the tyre pressures were good I'd be looking at the steering damper next.
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Old 02-18-2008, 08:22 AM   #3
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Could be a geometry issue as well. Was the bike lowered?
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Old 02-18-2008, 08:25 AM   #4
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5lbs is ALOT of wheel weight, but really you needed to ride a similar bike w/o th chrome to feel the diff.
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Old 02-18-2008, 08:53 AM   #5
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As above, look at the rear tire (see if it's over-sized), see if it's lowered, raised forks in the triples, tire pressure, and that's about all I can think of off the top of my head.
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Old 02-18-2008, 09:08 AM   #6
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wheel weight adds to the rotating mass.....yes, it makes a huge difference.

that's why people get mag wheels, the weight you lose from a few pounds spinning helps the bike spin up quicker.
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Old 02-18-2008, 09:58 AM   #7
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Quote:
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Does a little wheel weight really make all the difference?
It can make a big diffence, actually. Unsprung rotating mass is very noticeable, and 5 lbs is more than enough weight to make an impact you can feel.

I've run both the lightweight forged OZ wheels on my Aprilia and a set of heavier standard (non-R model) wheels. The difference isn't huge, but it is very noticable, especially at the track. Interestingly enough, I prefered the heavier wheels in the rain... they seem to make the traction feedback a little more predictable.
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Old 02-18-2008, 10:26 AM   #8
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I went to mag wheels on my r6. night and day difference over the stock ones. way more flickable.
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Old 02-19-2008, 01:44 PM   #9
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I'd bet that the setup of the bike is the main issue, not the wheels... I bet.
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