In Reply to: engine break-in - mixed messages??? posted by Rick in Colorado on January 29, 2000 at 11:13:42:
BMW run the cars up to 150km/h (93 mph) by following a pre-specified programme. They don't redline it.
Most people don't follow the break in procedure and don't appear to suffer any adverse effects, at least in the short term.
The break in procedures are specified in the manual, so I personally would tend to follow that advice.
Having lived in Denver, I know that the conditions can be pretty tough. Why don't you get snow tires for winter driving. That is what most of Europe tends to do. All seasons, which are not that great in most cases, are virtually unheard of.
: Due to weather, it's taken me nearly two months to accumulate 850 miles on my 540iA. BTW, don't let anyone fool you - these cars are absolutely allergic to snow/ice. I mounted 10mm wider Bridgestone S02s (on BBSs) and they spin uselessly on (seemingly) 1/4" of snow in billiard table smooth conditions. In any case, I gave up on breaking in the engine at about 300 miles. Originally I was thinking of buying a Porsche C-4 and at that time had read about their factory testing program. It seems that in addition to extensive high speed braking tests, they run each engine (on a test stand, I believe) at redline for 60 seconds. I also seem to remember that BMW does something similar (anyone know?). Doesn't that tend to negate all of us who try to really "go easy" on the car for the first 1200 miles? Help me alieviate my guilt!
: '00 540iA Dinan CAI + tranny S/W (snowbound)
: '00 Audi TT chipped to 212bhp (Blizzaks on all fours)
: '99 Lexus LX-470 (currently ruling the roost - 24" snow)