Hey David, 8 or 10 " wheels for 69 camaro? - Team Camaro Tech
Brakes, Suspension & Steering Conversion questions, Steering & Handling

 
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post #1 of 6 (permalink) Old Nov 23rd, 01, 07:54 PM Thread Starter
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joseph l clance
 
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Ready to install Hotchkis front and rear springs. In process of deciding on new set of rally wheels. Old ones are banged up and bent. I'm running 3:55 posi, m-20 &15x7 rally wheels: Approx 3100rpms @ 70 mph which is acceptable to me. Car does not handle very well with the 30 year old suspension (however recently replaced sub frame bushings w/ poly' helped a bit). Hotchkis claims that their springs will drop the front by 2" and the rear by 1.5". Id like to stay w/ 15' wheels. Should i go with the 8x15 or the 10x15 rallys? The 15x7 didn't grip very well. What radials would you recommend for the Hotchkis spring set as it relates to improved handling and launching?
thx.
Joe c.
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post #2 of 6 (permalink) Old Nov 23rd, 01, 09:14 PM
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David Pozzi
 
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I believe the rim should be as wide as the tire tread or slightly narrower.
I would start thinking about a 10" rim with a 265/50 and up tire.
A nine inch wide rim would probably be plenty.
I'd take a look at the manufacturers recomended rim width for the particular tire too.
I'm not really up on just what works with what these days. I don't want to steer you wrong.

The basic thing is stay just below the tread width and don't go too low a profile tire if you can help it. I'd rather use a fifty series tire than a 45 series tire.
You'll get better hookup and faster recovery if you overcook a turn.
David

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post #3 of 6 (permalink) Old Nov 24th, 01, 04:56 AM
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Tom
 
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Do a search in the wheel and tire section. I think you will find that a 10" rim will not fit very well.

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post #4 of 6 (permalink) Old Nov 24th, 01, 01:08 PM
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Here in Germany itīs "in" to have wide wheels. So itīs normal to have wheel/tire combos where the rims are (extremly) wider than the tires.
Itīs a question what "look" the people want for their car.
Look at www.wheelmachine.de for combos.

MK



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post #5 of 6 (permalink) Old Nov 24th, 01, 01:36 PM Thread Starter
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I'm only considering camaro rally's. I may go for a chrome reproduction of the original rally. So, its a matter of handling and performance. I'm just wondering if the additional inch (in width)over the 15x7's offer substantial enhancement in handling. While waiting for the hotchkis springs to arrive, was trying to acquire some known performance wheel /tire combo's that would take advantage of the new suspension.

thx to all that respond.

joe c.
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post #6 of 6 (permalink) Old Nov 24th, 01, 03:00 PM
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Joe,
I have used the 70's corvette rally 8" wide wheels and they fit very well.
A buddy of mine just used a set on his 69 camaro for track use and is very pleased.
He used to use 7" X 15 alloy rims but cracked one.
I'd been telling him for years to get those 7" wide rims off and use the 8".
A 10" wide is really hard to fit due to the inside offset needed to get it in there.
Most old style 8.5" aluminum wheels like the 200S or torque thrust have too much positive offset.
Newer versions have more neg offset and I think an 8.5" wheel with 4.5 to 4.75" backspace is real good. I would favor the 4.75" and use a spacer if the wheel needs to move out a little.
Third gen wheels like the IROC or Trans Am are pretty close, but might have a bit too much neg offset.
The third gen Z/28 wheel is good but only 7".
A 225X50X15 is probably getting near the limit without more backspace or mods.
I've heard of wider tires on the rear but don't know the mods used to get them on.

BFG has some great rear drag tires and I've heard the handling isn't bad either.
The G force road race type tires are good too, but not much tread on them.
David

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Check my web page for First Gen Camaro suspension info:
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67 RS 327
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[This message has been edited by davidpozzi (edited 11-24-2001).]
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