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Date: Wed, 17 Nov 2004 22:22:26 GMT
From: th <someguynospamwhere.se>
Subject: Re: New wheels?


Dave Hinz wrote: > On Tue, 16 Nov 2004 22:03:26 GMT, th <someguynospamwhere.se> wrote: > >>Colin Stamp wrote: >> >>>Sounds like bullsh1t to me. The wheels bolt to the brake disks, which >>>are are cast-iron, so steel wheels are closer to being the same metal >>>than alloys are. >>> >> >>It's not complete bullshit, it depends on what type of bolts you have >>(yet another of all the 9-5 design errors like crankcase ventilation, >>SID etc.!). With the original bolts, without a washer, the bolts may >>break if you switch between alu and steel rims and if you are not _very_ >>careful when cleaning the disks each time you change rims (clean >>carefully and use copper paste). > > > Eeeeh.... hate to bring facts into things and all, but there isn't > an auto manufacturer out there who doesn't offer alloy wheels to go > on steel hubs. Its not a "design error", it's a "Saab saw that there > is a potential for all cars with this mixture, and chose to > proactively deal with theirs" kind of thing. > My experience is that the problem is significantly aggravated on the 9-5 compared with for instance the 9000. When changing to steel winter wheel you have to work much harder to remove the rust on a 9-5 hub than on a 9000 (or C900) hub. You would expect that for each new model the manufacturer would learn how to improve the technical solutions. OK if the new bolt is one way of doing it but it seems more like a panic solution than a proactive solution to a known problem. -- th

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