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 Post subject: Re: Wheel width question
PostPosted: Tue Feb 12, 2019 7:45 am 
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1098cc
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Joined: Mon Apr 06, 2009 9:02 am
Posts: 1233
Location: Sandy Bay, Tasmania
I've personally never understood the concept of wide rims with narrower tyres. A while back I considered going up to 6" rims for more grip, but of course the tire selection is the same, so it makes no difference there. Surely going up to 7" just makes the wheel stick out more due to the offset, and makes the rims easier to damage since they're now sitting at the extremities (narrower rims means the tyre will hit a curb instead of the rim). Is it purely a cosmetic thing?


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 Post subject: Re: Wheel width question
PostPosted: Tue Feb 12, 2019 10:20 am 
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1098cc
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Joined: Wed Nov 24, 2004 10:23 am
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Location: Armidale, NSW
Irish Yobbo wrote:
Surely going up to 7" just makes the wheel stick out more due to the offset,


which means the scrub radius is larger meaning the wheel has more leverage over the steering, read more bump steer and torque steer and generally poor handling.

I think a wide rim on a narrow tire might prevent the tire deforming as much when loaded up around a corner, of course it's deforming for a reason and stopping it flexing probably means it lets go all of a sudden with less warning. The same could probably be better achieved by running higher tire pressures...

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 Post subject: Re: Wheel width question
PostPosted: Thu Feb 14, 2019 9:16 am 
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Joined: Fri Mar 19, 2004 6:19 pm
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Location: near Baulkham Hills, NSW
Comparing 165/70 -10 Yoko tyres on 5" and 6" rims, consensus used to be they broke away more progressively on 5". On 6" they hung on longer but then bam!

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 Post subject: Re: Wheel width question
PostPosted: Thu Feb 14, 2019 9:39 am 
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1098cc
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Joined: Wed Nov 24, 2004 10:23 am
Posts: 1488
Location: Armidale, NSW
drmini in aust wrote:
Comparing 165/70 -10 Yoko tyres on 5" and 6" rims, consensus used to be they broke away more progressively on 5". On 6" they hung on longer but then bam!

Thanks for the confirmation Doc.

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