Date: Tue, 24 Jul 2001 19:17:23 +0100 From: Johannes H Andersen <johsnopsamsafish.com> Subject: Re: Reprogramming ECU for 17" wheels
VIKINGMAN wrote: > > "Davo" <whatevernopsamever.net> skrev i en meddelelse > news:r7977.26748$Xr6.213865nopsam-server.bigpond.net.au... > > > Thanks Viking. > > > > Now could you tell me how the ride (generally) was when you changed down > to > > 45 profiles. I don't mind forsaking a little ride quality, but definatley > > don't want a significant change. > > I've heard the change is quite harsh, though the handling stacks better. > > Will be going from 205/50 profile to 215/45 profile. > > > > Davo > > Well, I can only recommend it. I'm also in favour of great ride quality > (comfort), but I also want the accurate handling. Bear in mind that I went > from a 195/60-15 to the 215/45-17, so my change was even more significant > than it'll be for you. I must say that my worries went away, as I still find > the ride very pleasant. We've just come home from Saab gatherings in Finland > and Sweden (drove 4000 miles in 10 days), and the roads there weren't always > the best. Still, the comfort was great! And I REALLY like the steering > accuracy with the 215-wheels. Btw. I git Yokohama A539 tires, which I can > highly recommend! The have great grip in the wet and the noise-level is > fine. > But are you using standard tyre pressure ? Extrapolating from /50/ tyres, I estimate that the correct pressure for /45/ tyres should be ~ 38-41 psi, this is a pretty hard, unless the suspension is set up for such tyres. I changed from 195/65/15 on my 9000 CSE to 205/55/16, it feels just right. I wouldn't like anything harder than that. Johannes > Although you can get the ECU reprogrammed, I'd still keep it as it is, as > the speedo's ALWAYS has some error reading. And this will be somewhat > corrected with the 215-wheels. > > Good luck on your future wheels! > > Cheers!
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