skywalker said:
I personally think that if a bare alloy finish had been thought of in the first place then maybe there wouldn't have been as many issues. Then again the boxers that were built in the 70's were far better made & the alloy quality was far better.
I haven't owned a Japanese bike in too many years to be able to make any meaningful comparison but I've owned quite a few BMW's.
I'm not sure that the build quality has altered much.
I can recall spending a lot of time trying to clean those 'quality' engine cases (especially in the winter when they would go furry!), replacing rusted nuts and bolts and replacing rotting seat-pans.
On both R100GS's I've had (one from brand-new), the collector boxes rusted badly and the silencers rusted along the top joints of the square section starting at the mounting point. The foot-brake levers and actuating rods corroded badly and the yellow fork lowers pitted and flaked. The quick-release fork gaiter clamps also turned red pretty quickly.
A mono-shock R80RT's rear sub-frame rusted through.
Same story on a 1988 K100RT viz the engine cases turning furry only now the rear swing-arm (un-painted) would oxidize badly too! The fairing supports, buried under the fairing but visible seemed to be painted with water-soluble paint. K-series seats would split at the leading edge but at least they had plastic pans that didn't rust! Foot-peg mountings on K's also rusted badly on early models. The radiator mesh's would rust like crazy.
A 1990 K1 I owned was the first to have the engine and drive train completely painted but the funny one-off fasteners for the fairing lowers and the front wheel fairing that had to be removed for servicing and tyre changing, would corrode as soon as a hex-key was used to undo them!
Front pipes on all K's would turn brown and then corrode. They were almost impossible to clean.
I think that compared to Japanes bikes in the 80's, they were better but the latter have got their act together whereas BMW have remained the same.
(Maybe the quality as reported by magazine testers is a throwback to those days when there was an appreciable difference? The "quality" tag was also applied to BMW's in those days because they would do high mileages when many Japanese bikes would need a top-end re-build at 30k).