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  #1  
Old 01-13-2010
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Rear brakes / SIZE?

Well it has come time to do my rear brakes and the auto parts store wants to know if they are 9 or 10 inch in size, wouldn't my truck have the larger size because it has 4 wheel ABS and the truck was factory ordered with all the bells and whistles including tow package. Or should I not be assuming I have the larger brakes, meaning the 10's over the 9's.

1996 ford ranger 4.0 4x4 supercab STX ( loaded )

Edit: can I call the dealer and give them my vin and they will be able to tell me on what size? or was the auto parts guy full of BS about the vin and dealer.
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Old 01-13-2010
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You can pull the drums off and measure them
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Old 01-13-2010
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i'm pretty sure the 9 inch drums have fins and the 10 inch drums are smooth
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Old 01-14-2010
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Why dont you just take a tape measure out there and get a rough measurement. Thats how ive always done mine and never had a problem. dont even have to pull the wheel off either.
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Old 01-14-2010
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what diff you got?
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Old 01-16-2010
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Maximum diameter for turning the drums should be stamped right on the drum, assuming they're OEM.
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Old 01-17-2010
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If you have the 7.5, you have the 9" drums. If you have the 8.8, you have 10" drums.

Being a 4.0 with 4x4 I'm betting you have the 8.8, but that's not a guarantee.
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Old 01-17-2010
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^+1^
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Old 01-17-2010
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Quote:
Originally Posted by D94R View Post
If you have the 7.5, you have the 9" drums. If you have the 8.8, you have 10" drums.

Being a 4.0 with 4x4 I'm betting you have the 8.8, but that's not a guarantee.
I have 10" drums but my axle code is 87, which is open 7.5
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Old 01-17-2010
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Interesting. I've only seen the 7.5's with the smaller drums. Being Ford though, not making sense, makes sense.
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Old 01-17-2010
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Quote:
Originally Posted by D94R View Post
If you have the 7.5, you have the 9" drums. If you have the 8.8, you have 10" drums.

Being a 4.0 with 4x4 I'm betting you have the 8.8, but that's not a guarantee.
False...
if you have a supercab, you have 10" brakes regardless of 7.5 or 8.8...
if you have a reg cab you have 9" drums regardless of 7.5 or 8.8

WITH EXCEPTION to edges, which all came with 8.8s
most all 01-03s came with 8.8s i dont think a 7.5 was available then
now they use the 7.5 again starting back in 04~05
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  #12  
Old 01-17-2010
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I did my brakes the other day and they were the 10 inch brakes!!
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