Different sized rotors and calipers on R-spec

[SoCal R-spec]

I was reading the Motor trend review of the R-spec and in the article they quoted that the front and rear rotors and calipers were the same size.

On mine there is a noticeable difference between the two. Is anyone else's R-spec like that? Just wondering..........
http://www.motortrend.com/roadtests/sedans/1112_2012_hyundai_genesis_5_0_r_specs_second_take/

 

[TJPark01]

I was reading the Motor trend review of the R-spec and in the article they quoted that the front and rear rotors and calipers were the same size.

On mine there is a noticeable difference between the two. Is anyone else's R-spec like that? Just wondering..........

They're only talking about the front rotors. 13.6 on the 5.0 versus 13 for the 4.6.

5.0:
Brakes, front 13.6-inch ventilated with four-piston fixed calipers
Brakes, rear 12.4-inch solid with single-piston sliding calipers

4.6:
Brakes, front 13.0-inch ventilated disc, 4-piston fixed caliper
Brakes, rear 12.4-inch disc, single-piston floating caliper

 

[SoCal R-spec]

It has larger brakes (up from 13.0 inches to 13.6 front and rear) clamped by four-piston calipers all the way around.

Read more: http://www.motortrend.com/roadtests...enesis_5_0_r_specs_second_take/#ixzz1inKJVWbV


This is the quote from the article. Am i reading it wrong?? Maybe the magazine misquoted?

 

[TJPark01]

It has larger brakes (up from 13.0 inches to 13.6 front and rear) clamped by four-piston calipers all the way around.

Read more: http://www.motortrend.com/roadtests...enesis_5_0_r_specs_second_take/#ixzz1inKJVWbV


This is the quote from the article. Am i reading it wrong?? Maybe the magazine misquoted?

Hmm... interesting. Yes I will have to say that MT article is incorrect. Edmunds data is correct:
http://www.insideline.com/hyundai/g...i-genesis-5-0-r-spec-full-test-and-video.html

Also you can see from the shop manual that the rear is a single piston design.

 

[SoCal R-spec]

Thanks TJPark01, You are a plethora of knowledge.

 

[TJPark01]

Thanks TJPark01, You are a plethora of knowledge.

I try.
BTW, I have 26k on the car and it's nowhere near needing new brake pads, and my driving in 60-70% city.

 

[markn455]

I was reading the Motor trend review of the R-spec and in the article they quoted that the front and rear rotors and calipers were the same size.

On mine there is a noticeable difference between the two. Is anyone else's R-spec like that? Just wondering..........
http://www.motortrend.com/roadtests/sedans/1112_2012_hyundai_genesis_5_0_r_specs_second_take/

The ones on the back appear to be smaller on my R-Spec

 

[jstkrsn]

Hmm... interesting. Yes I will have to say that MT article is incorrect. Edmunds data is correct:
http://www.insideline.com/hyundai/g...i-genesis-5-0-r-spec-full-test-and-video.html

Also you can see from the shop manual that the rear is a single piston design.

I have a 2012 3.8. That shop manual you showed a link to shows a 12.60" single piston caliper for the 3.8 for 2012 in the front. However mine definetly has a four piston caliper and a 12.99" Rotor in the front. Was this an upgrade for the 3.8 also and it has not been corrected in the shop manual yet?

Thanks for the link, it'll come in handy

 

[TJPark01]

I have a 2012 3.8. That shop manual you showed a link to shows a 12.60" single piston caliper for the 3.8 for 2012 in the front. However mine definetly has a four piston caliper and a 12.99" Rotor in the front. Was this an upgrade for the 3.8 also and it has not been corrected in the shop manual yet?

Thanks for the link, it'll come in handy

It's possible the manual is wrong but for the 2012 it lists:
Front Disc brake 3.8L
Type Ventilated disc
Disc O.D. 320mm (12.60in)
Disc thickness 28mm (1.10in)
Caliper piston Single