I've just replaced the rear brake pads again - after around 2,500 miles. This leads us to a valuable GP800 ownership lesson - on a bike with a 6,000 mile service interval.
I was cutting it fine (although not as badly as last time !). The pads would have been replaced at the recent 18,000 mile service but that would have pushed the job into a second day - and I wanted the bike back so I sourced and replaced them myself.
Although the more visible front calipers are the excellent Brembo "Serie Oro" jobs, the rear has to make do with the same Heng Tong caliper fitted to many of Piaggio's mopeds and small scooters.
This does have the advantage of ready availability (SFA353 if you're interested) but it also means that the common availability is limited to the lower grade organic pads which are fine for smaller bikes. These are what I fitted last time and to be fair, their ability to assist in bringing the 260kg behemoth down from very high speeds is not in question. If you read up on them, you'll also find plenty of recommendations based on the "feel" of the brakes. That's probably a fair point as I have locked up the rear of the GP800 far less frequently since fitting these pads. They also wear the disc itself far less.
Given the reputation of the Heng Tong caliper for seizing the retaining pins, a more frequent need to change pads (and re-apply copious quantities of Copaslip) could be seen as a positive benefit - but on December 5th, in our current weather conditions, that's not a positive feature in my book.
In fact, changing the pads is a remarkably straightforward job. I'm never entirely happy changing pads with the caliper hanging off the hydraulic line - especially if any force has to be applied (changing pads on the Brembo calipers fitted to the K75 is a much simpler proposition altogether) but once the retaining pins are unscrewed, the new pads just drop in - and at least small pistons are much easier to push back in to refit the caliper over the disc.
The new pads are EBC HH sintered pads. Lets hope that they last significantly longer - but not at a cost in increased "grabiness". The other thing that might encourage me to stick to the softer pads will be if I see any signs of increasing disc wear.
