Guest 280steveX Posted March 18, 2003 Share Posted March 18, 2003 in all the text i read it says the Zs have BIG solid discs in back but smaller vented discs in front. why did Nissan do this, what advantages are there? Quote Link to comment Share on other sites More sharing options...
blueovalz Posted March 18, 2003 Share Posted March 18, 2003 Rotor diameter or size is just one of many factors used in designing brake systems. The same end result can be had with a reversed scenario, by re-designing the other parameters of the car such as caliper design, weight distribution, etc. The rotor size is only one of many things that make up the characteristics of the entire system. The larger rear discs have smaller caliper pistons, which means less clamping force, which means less effectiveness compared to the front rotors which do most of the cars braking. So with more braking being done, vents are added to dissipate the extra heat, and a larger piston is used in the caliper for more clamping force. Then I'm sure there were other reasons the diameter was not 2" larger to begin with, but then you get into the strut and/or wheel design, and economics of car building too I assume. On my car, the front rotors larger than the rears, but I'm using a different set-up with the calipers. Quote Link to comment Share on other sites More sharing options...
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