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Shimano Ultegra - BR-R8000 Brake Caliper - Experiences/Opinion

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Shimano Ultegra - BR-R8000 Brake Caliper - Experiences/Opinion

Old 11-17-23, 09:59 PM
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Shimano Ultegra - BR-R8000 Brake Caliper - Experiences/Opinion

I was looking at the Shimano Ultegra R8000 Rim brake calipers. Standard mount not direct mount. I believe they are 51mm reach - so I guess that makes them a mid-reach caliper.

I am wondering what width 700c tires have folks have been running with these? I have seen that they will work with 28mm easily.
Also, wondering about the modulation and feel. I have some 7000 series 105s and I think they feel great. I would assume the Ultegra brakes would be very similar if not a bit better?
Finally, what is the grey black color - is that basically black or is it like a graphite or something odd like that?
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Old 11-17-23, 10:55 PM
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How they feel and modulate will depend on the lever, since these are not built for the old standard road lever pull.
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Old 11-18-23, 06:32 AM
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The colour is a kind of deep graphite. Looks better than glossy black. Quite nice. Goes with anything 😁
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Old 11-18-23, 01:25 PM
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Originally Posted by FordTrax
I was looking at the Shimano Ultegra R8000 Rim brake calipers. Standard mount not direct mount. I believe they are 51mm reach - so I guess that makes them a mid-reach caliper.

I am wondering what width 700c tires have folks have been running with these? I have seen that they will work with 28mm easily.
Also, wondering about the modulation and feel. I have some 7000 series 105s and I think they feel great. I would assume the Ultegra brakes would be very similar if not a bit better?
Finally, what is the grey black color - is that basically black or is it like a graphite or something odd like that?
Official Shimano spec says 28 mm
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Old 11-18-23, 03:34 PM
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I was thinking the velo orange Grand Crewe calipers which would work to 32mm. But the 105 calipers I have on my steel road bike are really good ... so the Ultegra should be just a tad nicer than the 105s. And about $50 cheaper.

Just wondering if I could get away with some 30mm tires with the Ultegra. Which would probably measure out to like 28-29mm anyway.

If I went with Ultegra I would probably just go with modern brake levers like the IRD Drillium Aero, TRP RRL (TRP fanboy), or Shimano BR400 Tiagras ... since I am running the ENE Wing Shifters.
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Old 11-18-23, 07:03 PM
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I ran 30mm tubular on the 6800 105 brakes and it worked without an issue

I have the Grand Cru on my kirk and easily run 32 mm Rene herse tire. the grand cru brakes are really good
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Old 11-18-23, 11:12 PM
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I had Ultegra 6800 brakes on my last bike. 28mm Conti GP4000s fit fine. In fact on the Ultegra tubeless wheels I was running, tires measured just over 29mm at 70 psi with about 2.5mm of space all around it.

I did a little digging on Shimano's site. Max tire size for these brakes is 28mm. Just remember over-all width at ride pressure is going to matter most whether or not a 28 will fit. Inflated tire widths are all over the place. Seen 28's that measured 26c at ride pressure. Seen 32's measure over 35. Depends on tire/rim combo.

Ultegra Br-R8000
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Old 11-23-23, 11:27 AM
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The main factors in tire size are the caliper, but also the height and angle of the caliper mounting hole in the frame or fork.

Similar problem to max cog size and two different derailleur hangers.
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