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I got a 9 inch rear end out of a 65 Thunderbird and its slightly wider than the Cougar 8 inch rear end. My question is "how does a wider rear end affect handling"? I'm talking an extra inch on each side but NOT poking out the wheel well.
 

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I can give you some insight into the effects of the width of my wife's rear end. Unfortunately I can't help you with the car. :buck:


Yeah I know. But all you guys were thinking it. :thinkuh:
 

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I can't imagine why it would cause you to have more (or less) oversteer or understeer. Those issues are related to a difference in traction between the front and rear tires while turning. Understeer - front tires plow forward due to reduced traction. Oversteer - rear tires slide out due to reduced traction. A wider rear end, as Al implied, could mean you would need more ballast weight on the passenger side.

Here's a thread that might have the answer you are after.
http://www.eng-tips.com/viewthread.cfm?qid=165852&page=1
 
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