Fiesta ST autocross accident

[tri-pedaler]

205/45/17 tires. But idk if I’m asking for trouble with that tire size. Also, are the re 71rs or a052 too much tire for a fiesta st with stock suspension?

That is a lot of sidewall and additional CG for AutoX. The ‘stones are great so I would honestly be worried at that height. Go stock 40 series, or down to a 215/45/16 if you can get wheels for it— it’s a very light setup.

do you have experience with the car at an event? If not I’d just run what you have for now and get a feel for it.

 

[pixelzombie]

Bumping this thread instead of starting a new one.

So it’s been almost 4 years since the original post. Has there been anymore tipping accidents while autocrossing? Seems like the track guys are having no issues.

I just got a 2019 fiesta st with a moonroof. I was originally thinking about using 17 inch wheels with 205/45/17 tires. But idk if I’m asking for trouble with that tire size. Also, are the re 71rs or a052 too much tire for a fiesta st with stock suspension?

I’ve read a few threads on this forum and posts on the Facebook groups. But nobody seems to discuss this subject.

Thanks

Why would 17" wheels be an issue? I run that size and it feels secure, especially after lowering it an inch or so.

 

[tri-pedaler]

Why would 17" wheels be an issue? I run that size and it feels secure, especially after lowering it an inch or so.

If you’re in H Street you can’t lower it. It’s more the 45 series tire he’s suggesting that’s the issue. A 40 series with 17s would be fine.

 

[PWRSRGE]

I don't think it has happened again. Pretty sure it would be all over the internet if it had.

Here's an example of A052 used on a Fiesta ST for autocross: https://www.fordmuscle.com/features...art-5-driver-comforts-and-yokohama-a052-test/

Yeah, I think that was the only example I saw of a fiesta st. I did see other vehicles flip, for example fiat 500s.

 

[PWRSRGE]

It still happens. Local guy had one go up on two wheels. Lot of it is course dependent. 95% of the time you will be fine.

I autocrossed for years and I did see a lot of fwd hatchback being tripods for a second or 2.

 

[PWRSRGE]

If you’re in H Street you can’t lower it. It’s more the 45 series tire he’s suggesting that’s the issue. A 40 series with 17s would be fine.

Yeah, Im thinking about doing h street next yr. And I’m worried about the cog being too high on this car.

 

[PWRSRGE]

I guess I forgot to mention I’m thinking about competing in h street next year.

I also autocrossed for 9 years but haven’t in the last 4. I have experienced with a mk5 gti, c6 and c7 corvettes. So I didn’t put a lot of thought about cars flipping on their side until I bought the fiesta.