Noob rear diff question

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Jun 8, 2008 | 05:53 PM

Ten32

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Launching!

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From: Chicago suburbs

Noob rear diff question

I'm taking my car in for service (under warranty) this week because my rear diff is making some odd squeaking/thumping noises. If it turns out it needs replacement, I'm going to pay the difference in cost to upgrade to a 12-bolt. My question is: which gear ratio should I go with? This car is my DD so I'd like to keep some comfort level and fuel economy but added performance would be nice too. What's a good compromise? Also, are there any specific brands to look for or avoid?

Jun 8, 2008 | 05:58 PM

MYSTIC-1SC

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i've chosen to go with 3.73s in my a4 car.

Jun 8, 2008 | 06:17 PM

spy2520

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From: Waldorf, MD

3.73s usually.

Jun 8, 2008 | 06:45 PM

boola1341

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From: Meherrin Va.

3.73's here. At 60 mph i'm doing around 2100 rpm

Jun 8, 2008 | 06:47 PM

boola1341

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From: Meherrin Va.

i went with motive gears. i can't hear any noise. richmond gears are said to be noisy. You could find more out by doing a search

Jun 9, 2008 | 08:30 PM

R/Truck

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From: Houston, Texas

Avoid richmond gears, they make noise in every make and model I have heard.

Jun 9, 2008 | 11:12 PM

snake charmer

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From: The south

if you dont drive top end then go with the highest gear you can get . gears in our cars can put cars to shame on the street and the track . though if you like to have fun on the interstate or road course you will top out sooner . weigh your options .