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post #1 of 22 Old 05-20-2019, 07:27 PM Thread Starter
 
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Rotor cross reference

Has anybody had any luck sourcing rotors that will fit on a QP5? I've got a 2012 'S' that will need rotors soon, and i'd rather not spend $500+ for front rotors. I tried searching old threads, but couldn't find an exact answer....Thanks in advance.
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post #2 of 22 Old 05-20-2019, 10:47 PM
 
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Pretty sure nothing is gonna work from another car...Formula Dynamics has some aftermarket ones at a better price...Jason

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post #3 of 22 Old 05-21-2019, 07:30 PM Thread Starter
 
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bummer...thanks for the response Jason.
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post #4 of 22 Old 05-21-2019, 08:02 PM

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I would just buy them OEM when they're needed. They're not that expensive considering how infrequently they need renewed.

Oh, and anyone who tells you that they need swapped every 30K, is lying hard or trying hard to sell you their products. Unless you have a 600-pound girlfriend riding shotgun full time or you're pulling a decent sized boat, steel brakes last quite a while.

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post #5 of 22 Old 05-22-2019, 12:44 AM
 
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The other Maserati forum site had a group buy and had rotors made up out of carbon fiber. I got there too late...nevertheless I couldn't get any informative responses to my questions.

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post #6 of 22 Old 05-22-2019, 12:59 AM
 
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Carbon fiber brake disc for replacement of the OE iron ones? ..I would check your facts there...It is a totally different deal and is not cheap at all...Carbon fiber disc are a pita to manufacture and are expensive as hell and require a different pad...Really don't even belong on a street car IMO....Jason

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post #7 of 22 Old 05-22-2019, 03:46 AM

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Exchange rates somewhat favorable

Quote:
Originally Posted by aGkrass View Post
Has anybody had any luck sourcing rotors that will fit on a QP5? I've got a 2012 'S' that will need rotors soon, and i'd rather not spend $500+ for front rotors. I tried searching old threads, but couldn't find an exact answer....Thanks in advance.
With 1 pound sterling selling for $1.27, checking OEM prices from some UK providers might be worth a look. Cheapest I've seen it in last 2-3 years was $1.21 .
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post #8 of 22 Old 05-22-2019, 05:51 AM
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There's a new order for GTS discs about to go in. They are made by Apec I believe.

C

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post #9 of 22 Old 05-22-2019, 10:10 AM
 
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Anyone know if a set of GT 6 piston brakes will be bolt on for a QP5? I often wonder since that would be a great upgrade.

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post #10 of 22 Old 05-22-2019, 07:56 PM Thread Starter
 
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Originally Posted by Catmanv2 View Post
There's a new order for GTS discs about to go in. They are made by Apec I believe.

C

Catman; how do i find out more?
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post #11 of 22 Old 05-23-2019, 05:48 AM
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Catman; how do i find out more?
https://www.sportsmaserati.com/index...-brakes.28129/

Cheers

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post #12 of 22 Old 05-23-2019, 01:22 PM Thread Starter
 
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thanks
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post #13 of 22 Old 05-30-2019, 09:32 AM
 
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I think we might be confusing terms. As I read the description of the rotors they mention “High Carbon Content”. I think they are talking about the steel disk being high carbon steel with higher hardness and more spring like properties than cast iron or mild steel. Less likely to warp.
Carbon Fiber Disks as Jason says, are cutting edge racing bits and sometimes found on top of the line performance cars, but they have their issues with cold operation and other quirks.
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post #14 of 22 Old 05-30-2019, 06:44 PM

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Honestly, all these claims of ant-warp properties simply don't apply to Maseratis of this era. I am very hard on my brakes. My rotors have 116K miles on them. No pulsation, no unusual wear.

Older Porsches and Mercedes would warp when overheated. I used to autocross them and it was a regular thing. Maseratis simply don't.

Also, I drive quite a few Maseratis and Ferraris now and I have yet to experience this problem.

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post #15 of 22 Old 05-31-2019, 07:42 AM
 
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Eric.
Thanks for the insight. I don’t have as many miles as you, but also no warpage issues on the original cast front disks.
My comment was aimed at clarifying the question about carbon fiber disks, which are a very different thing, and high carbon steel disks (vs cast iron) which are comparable and can use the same pads with similar braking results.
As with anything, quality is in the details. Cast iron disks are great in terms of cost, noise properties (they self deaden noise a little bit) and are easy to cast. The problem is that high speed production often leaves residual stresses in the finished product. So, when you get them cherry red, they want to move (warp) back to their relaxed position. Better quality ones would be post heat treated to relieve this stress, then machined. The casting and cooling process is also slowed down to reduce the amount of residual stress. That is how some OEMs do and some do not have warpage issues. Just a little FYI.
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