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Old 02-04-2013, 07:20 PM   #10
Errant Erik
Focus Rookie
 
Join Date: Oct 2008
Fan#: 60085
Location: VoCo Florida
What I Drive: '01 Black ZX3

Posts: 12
FF Reputation: 1 Errant Erik Good Standing Member
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As a disclaimer I don't like how you can't read sarcasm or feeling through what's typed on a forum, so, not trying to fight or anything because IDK where any one is coming from, I'm just saying this thread wasn't meant to be so much about what people like or some think is propper. Its just like why I don't go on peoples threads about this lip or that lip, or this body kit or that, and start bashing them for still thinking they are Vin Diesel and this is 1999, to each their own.

I'm just gauging what has been done, and what there might be room for...anything unrelated from this post out I'll just ignore. No offense, but this is why my post count is so low on this forum, its a site of people who don't recognize their car is; a cheap econobox, not a purpose designed track car...


1) I come from both the volkswagen and honda community, I'm not a noob to this either, my mk1 focus is running 195 on 8's, but other people in my circle are running 185s on 8s, and a buddy on his mk4 r32 is running 195 on 8.5 front and 215 9.5 rear...

2) this isn't my performance car, that is what my mk1 project is for, idk if you or many people realize this but stretch isn't anything new and goes back to the early days of circuit racing and f1, here's a lil history for ya:

Quote:
The Racing and High-Performance Tire, Using the tire to Tune for Grip and Balance, Paul Haney, 2003, co-published by SAE and TV Motorsports
pp.99-101


Selected quotes from an interview with Jim Hall and Brian Redman. Racers from the '50s and '60s:

Jim: “We had started runnin' skid-pad tests, just going round and round on the skid pad. We got good at it and we found out we could balance the car this way. It was a little bit more technical than we could figure out. It would go up to 0.98 Gs one way and only 0.92 Gs the other way. So Firestone told us their tire was built to run on a 7-inch wide rim. I had built some modular wheels and we could vary the width by what mid-sections parts we used. We'd run the tires they gave us on a 7-inch rim and maybe an 8 and a 9 too. The wider rims made the sidewalls stiffer and instead of running a 0.95 average G you'd run a 0.99. So of course we put them on 9-inch rims. Well, we'd go to the next race and the Firestone guys would look and them and say, "We didn't design those tires to run on a 9-inch rim. We better build a new tire.‟ They'd add an inch to the tread. They'd do them quickly too. They can build prototype tires in a hurry. In a couple of weeks they'd have another tire. And we'd run on a 9-inch rim and a 10 and maybe an 11. And we'd find it was better on a wider rim, so it would happen all over again. In a matter of less than a year we went from those narrow little Dunlop Green Spots to a tire that was almost double the width. So that's what happened with me on tires. In the middle '60's, probably '64 or '65, Firestone took us from less than 6 inches of tread width up to 12 inches.”

Paul: “Just because you kept skidpad testing them on wider rims?”

Jim: “Right.”

Brian: “Speed on the skidpad is speed around the racetrack”

Jim: “Cornering speed is the key to everything. You can have more horsepower but you got to stop it at the other end. But if you can leave the corner just that much faster, you carry that speed all around the racetrack. The whole thing is cornering speed, basically.”
no a 215 on a 9.5 doesn't fall into that still performance oriented category nor does an 18x9.5, but again that isn't what this bone stock econobox is about...

3) I have friends that run a tire shop, we f' around all the time seeing what we can set; so far 175 on a 9.5 was the most we could set using a cheetah bead setter, also we have an eastwood roller i'm not terribly worried about rolling its the pulling that gets me...

4) I was looking for insight from people who have poked around the wheel wells and suspension of this car to get a sense of what can fit in terms of back spacing and total width, not a lecture on stretch

5) everything is theoretical still, just trying to find out how far the car has been pushed: so far there has been jon holso with 19x9 (on 215s) et34 front et30 rear with a lot of pull, and choas09 is going 17x9 et36 with maybe some pull, like I said 18x9 is what I'd prefer (and you can't argue that a 215 wont fit a 9) but as of yet I haven't seen wheels I like in our pcd, let alone that wide, so unless someone here in orlando can sleeve and redrill wheels I'm SOL...

6) other wheel idea is run a set of all rear wheels from a ferrrari 348 those are 17x9 et43 and pretty common, ugly but they have heritage... https://www.google.com/search?hl=en&...EI6k8AS5vIDYAQ
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