I’m using some hope standard rotors, 220 front and rear. They are 2.3mm thick. Any 180mm and bigger are 2.3mm. I think TRP do some fancier ones as well.

Hope Standard Fixed Disc Rotor. 6 Bolt. 120 140 160 180 183 185 200 203 205 220mm.

I have the TRP R1 ran with Hope E4 calipers. I wouldn’t want to be bothered with trying to get them to play nicely with any caliper using moon/cup washers etc.

If you are running Hope V4’s you can run the Hope V4 vented rotor, 3.3mm thick, availible in 203mm and 220mm

https://www.hopetech.com/products/brakes/discs/vented-rotor/

Also using the TRP ones, they are fine. I’m a habitual rear brake dragger and they handle the heat better than the SRAM centrelines

At least witht he Hope non floaty ones you can bend it to shape if warping happens.

Also using Trp. Have used Formula 2.2mm and they were good too.

I have TRP, they seem like good parts tbf it’s made absolutely no difference for me so far. I think in my case it’s an “ain’t broke can’t fix it” thing, my brakes worked well before.

Ebike Maggy one piece rotors plus TRP standard ones does it for me.

I started with Magura MDR-P 220mm front and rear, bike developed a rattle and after changing the mech, suspension bearings and going mad, realised it was the rear disc… swapped to a 220mm SRAM and have had no issues. Yes I am running Magura front and SRAM rear rotors…

The newer SRAM rotor isnt as noisy as ones I’ve had before.

Do they have to be the fancy MDR P versions though…

FWIW I’ve not had any rattling issues with my front 220mm MDR-P, it’s been great. I like the added benefit of thicker rotors reducing dead stroke.

Echo comments already made about the TRP 2.3mm rotors. They just work and they’re not overly expensive.

Tektro tr-17 is also an option, 2.3mm thick. RRP of £15-£25, so worth a try and see if it works for you.

I wouldn’t go back to less than 2.3mm rotors, work better in every way other than weight.

My TRP brakes have 2.3mm rotors and 5mm thick pads. I can’t find any non-OEM 5mm pads. Any ideas?

Which brakes?

I have a set of the Merlin £50 Tektro 4 pots on one bike (with 2.3mm rotors) and they came with 5mm pads, but I’m now running normal 4mm pads with no issues. Same pads that fit TRP Slates and Shimano Saint, etc.

I’d only be concerned about over extending the pistons if I was running 1.8mm rotors on them.

I went from Magura to SRAM HS2 and cant fault it, much better then the previous version of SRAM centreline which was awul.

If all else is equal then it’s the ratio between the squares, so about 60% stiffer going from 1.8 to 2.3mm