Brompton owners

I got some Ti bolts & nuts but the haven't noticed any bad corrosion on those I didn't replace. I'd be tempted to say it's not worth it. I have had more trouble with the brake callipers when it comes to both cosmetic and functional corrosion. Had to rebuild the front after it seized last year but preventative GT85 as a polish and greasing the spring where it slots into the back of the pivot seem to be the key - do it before the salt gets in there especially if you are riding country lanes with extra salt!

Also re. grips I put Ergons on my first Brompton buy not the last two and have got used to it, don't panic!

Glad you're enjoying it so far, hopefully will bump into you at TH fairly soon again to compare helicopter taped bits.

No no no, hell no.

You need to change your rear hinge every year (base on folding twice a day five days a week), so that'll add up for almost nil gain.

And they don't rust, all the rear hinges I replaced is clearly smooth and almost rust free (the worse one was a 10 years old Brompton whose owner doesn't realised it need maintenance).

I love titanium bolts, but I've kept the steel ones on the rear hinge. The only other steel bolts I can think of on the bike are those holding the wheels on and the crank bolts - all the rest are titanium. But the pivot hinge and bolts are effectively disposable as it's often necessary to drill the bolts out when replacing them, so having titanium ones seems just a bit too profligate.

Also, while titanium doesn't rust like steel it does have epic galling issues particularly when used in two titanium parts threaded together. Not too much of an issue if you use plenty of anti-seize, but given the hammering the pivot and bolts get from their location, I suspect galling would be an issue.

tldr; listen to Scoble