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2003 DTS
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46 Posts
Discussion Starter #1
Hey guys, I'm buying a new set of EBC redstuff ceramic brake pads from a guy on ebay with free shipping for $80. The guy needs to know what size rotors I have on my car. He said I should have either 11.9in or 12.8in. I've been the 2nd owner of the car since 2008 & I'm pretty sure there wasn't any kind of brake upgrade done before I bought it. Is there any way to figure out this info with out removing the wheel?
 

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2001 Seville STS, 1990 Seville (RIP), 1972 Sedan Deville
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26,323 Posts
12.8, 8 lug rotors are for commercial chassis, FE7 cars.

EBC RedStuff front pads, part# - 31100C
 

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2003 DTS
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46 Posts
Discussion Starter #3
Ok thanks Moist. Those are the ones I ordered. He needed to double check because he has had some customer returns.
 

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'98 STS (RIP @ 206,xxx miles)
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4,854 Posts
....The guy needs to know what size rotors I have on my car. He said I should have either 11.9in or 12.8in.
If your vehicle does not have RPO code J55, your front rotors are 11.9" (303 mm) in diameter.

If your vehicle does have RPO code J55 (very unlikely, this was a limo/hearse chassis option), your front rotors are 12.8" (325 mm) in diameter.

Make a note of the rear rotor diameters for future reference.
Without J55 = 11.7" (297 mm)
With J55 = unknown because the 2004 Deville Service Manual dimension is obviously a typo.
 
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