Dear All, This post will undoubtedly cause some reactions, but please bear with it. Firstly, if you are going to race a 7 then I wholeheartedly agree that you should have flexible brake hoses fitted and if you plan this undertaking on a road car it is entirely up to you and I would not be one to sway you from that. However, I would suggest that we consider the facts not necessarily what we might consider good or otherwise engineering practice. Firstly, it is relatively easy to assess the condition of a metal pipe by a visual inspection. It is impossible to ascertain the condition of a flexible hose (particularly if it is braided) therefore the only viable option is to replace these at a time based interval. If you also replaced the metal hose at the same interval I would imagine that there would be no issues or concerns. Secondly, there is the issue of routing and additional protection to ensure there is no fretting of the hose on the suspension components. This is not an issue with the brake pipe. You may be inadvertently adding an additional failure mode. Has anyone ever suffered a brake pipe failure on a road going car? The movement of the caliper as the brakes wear is minimal and the correct brake pipe will have the correct radiuses to allow for this. This is how all pipe systems allow for expansion/contraction and movement. Also, given that the material used is "malleable" it should be at least hundreds of cycles before fatigue fracture sets in. (a long time since I studied metallurgy but more than a couple of pad changes). You are also "modifying" the primary safety system (albeit with good intent) away from the manufacturers design. Have you advised your insurers of these mods? Lastly the great man himself said "simplify and add lightness", this is the opposite. You are in fact adding more opportunities for failure. This is not meant to cause offense, grumpiness or swearing merely to put into perspective an engineering conundrum. Just for the record, my car has brake pipes which will be changed when I change the brake hoes. Thanks for reading