Forgot to mention that with 17 inch rims I would use 205/50/17 Front and
225/45/17 Rear and maintain the same rolling radius you have now.
Yokohama Advan is a great choice for these sizes
-----Original Message-----
From: peugeot-L@yahoogroups.com [mailto:peugeot-L@yahoogroups.com] On
Behalf Of James Rabin
Sent: Friday, July 22, 2005 10:47 PM
To: Karydas
Cc: peugeot-L@yahoogroups.com
Subject: [Peugeot-L] 504/505 performance
I haven't done the strut bar yet(it's on the list when I do the FMIC),
and I have tried various tire pressures and the like with no good
results. Tire temp is usually an issue, but even on a hot day they'll
still spin like crazy. The runs are very short so there is little time
to get them to proper temp. The plan once all is fitted is to replace
the used tires I'm mounting for 17" fitment purposes with proper
performance tires that don't need as much heat to stick well - Falken
Azenis tires are supposed to be VERY good cold, and still work nice when
hot.
As for where my car loses traction - The biggest problem was coming on
boost while the car is in transition - I get nasty wheelspin and the
back end fishtails all over the place. It just can't put the power down
the way I want it to.
When hard into a corner the car is very neutral, but the moment I hit
boost the rear tires spin and I start drifting - which is fine, and the
car is beautifully capable of keeping the drift - but I lose forward
thrust.
My hope is that with larger contact patch and better rubber I can put
more power to the ground without spinning.
With a carbed XN motor the 195's are probably plenty for putting the
power down, but I think for high speed cornering I'd prefer a 205 tire
(maybe even a 225) on 7" wheels. Rotational weight would increase of
course, but I think the benefit of the larger wheel/tire combo would be
worth the penalty. The point is moot though if you can't do it under
the rules.
I already have a GTech pro - but I've yet to use it on the 505 Turbo. I
wanted to use it for tuning once I have a decent baseline to work with.
Right now the car is stock - but what I'll likely do is run numbers with
the stock tire combo, then run them after with the wheel tire upgrade.
I'll definitely post results - even if I prove myself wrong. Curiosity
is far to great as I just have a hunch the car is just under tired for
what I want it to do.
I also have no doubt that my suspension is in dire need of work, and it
could use a ton of tuning, but I still think the car is too heavy, and
it has capabilities that exceed the limits of the size of tire it's
Onrunning. Just my .02 though...
I'm all talk until I find out for myself - so hopefully my hunches are
correct and I don't mess up the handling. If I do - then I'll have a
much better idea of where to focus my attentions... If nothing else -
the car will look cool with bigger wheels and tires on it... :)
Too bad we didn't have hills in Saskatchewan (flat as flat can get for
hundreds of miles) - hill climbs would be a hoot...
- Original Message -----
From: Karydas <karydas@hol.gr>
Date: Friday, July 22, 2005 1:13 pm
Subject: RE: RE: RE: [Peugeot-L] 604 to 504 suspension swap
> I wouldn't give up on these rims and the 195's just yet. Tire
> pressures(try cold 40 psi) tire temperatures (are they warm enough
> when you run
> them) and suspension tweaks make a world of difference. I am not very
> fond of extra wide tires because of the extra weight and the
> accompanying problems. The tire that I really like is the medium
> compound A048 Yokohama rally tire. (I inflate it to 38 psi and keep
> warming it up until my pressure gauge tells me that the tire pressure
> has stabilized at which point I let it rip.) Suspension set-up is
> morecritical. Where are you loosing adhesion first (F/R all
> fours?) Are
> your inside wheels coming off the ground before you start
> skidding? Are
> you using a strut tower bar? (You can make one really easily and it
> makes a world of difference.) The permutations are way many especially
> without instrumentation. Have you heard of the gtech device
> (www.gtechpro.com)? It is worth a look and if several autocrossers buy
> it together it costs about the same as a night out. Anyway, I have the
> feeling that you can do really well with the 195's with a strut tower
> bar, polyurethane bushings for parts of your suspension and revised
> spring rates and adjusted height. All this can be done on the cheap
> (cutting off some of Brian's old coils, machining the bushings out
> of PU
> blocks, making the strut tower bar in a machine shop). Let me
> know if
> you want to go that route and I will post specifics.
>
> Thanos
>
> -----Original Message-----
> From: James Rabin [rabin505@sasktel.net]
> Sent: Friday, July 22, 2005 9:27 PM
> To: Karydas
> Cc: peugeot-L@yahoogroups.com
> Subject: Re: RE: RE: [Peugeot-L] 604 to 504 suspension swap
>
> Is it possible to use widened Peugeot steel wheels?
>
> While slaloming my 505 Turbo - I found that the 195 section tire was
> easily overpowered and it wasn't up the cornering forces I was
> generating. (Yokohama A008 R-compound tires)
>
> After finding that the BMW 5 series had similar offset - I decided
> to go
> that route and find wheels to fit to my car that would give me the
> dimensions I needed.
>
> Aside: The wheels I recently bought ran into a snafu, and they were
> refused by the place my buddy had me ship them too. (He said
> there was
> no problem for me to ship there!) I now have to see about getting
> themresent and I'll likely have to cover shipping again... :(
>
> Ah well - it was a good deal and still is even with x2 shipping.
>
> Once I finally have the wheels in hand I'll be able to nail down the
> spacer width at the front, and then the wheels are getting refinished,
> tires mounted, and the spacers made - all at the same buddies shop...
> :)
>
>
>
>
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Received on Sat Jul 23 15:31:47 2005
