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225s on the front by billy bee
Started on: 08-17-2022 02:17 PM
Replies: 7 (633 views)
Last post by: hnthomps on 08-18-2022 01:01 PM
billy bee
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Report this Post08-17-2022 02:17 PM Click Here to See the Profile for billy beeSend a Private Message to billy beeEdit/Delete MessageReply w/QuoteDirect Link to This Post
Greetings all:

New here and have a quick question. We are trying to run a square set-up on our 24 Hours of Lemons Fiero. We are going to stick with 15" wheels and want to run 225/45-15 Hankook R-S4 tires all around. We have several 15x7" wheels with 35 offset. Anybody know if the 225's will fit up front?

Thanks,
Bill
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cvxjet
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Report this Post08-17-2022 03:23 PM Click Here to See the Profile for cvxjetSend a Private Message to cvxjetEdit/Delete MessageReply w/QuoteDirect Link to This Post
I have 16 x 7 wheels with 38 mm offset on my 85 Fiero. Also, 205/55 tires. My cal-cu-mi-lations show that your tire outer sidewall will move outward 13 mm (1/2"). The inner sidewall will move inward 7 mm (Just over 1/4")

I think you will be ok- but you would experience more kick-back thru the steering and a bit more effort turning>>>At low speeds (Not really critical on a RACE car)

[This message has been edited by cvxjet (edited 08-17-2022).]

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Frenchrafe
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Report this Post08-17-2022 04:56 PM Click Here to See the Profile for FrenchrafeSend a Private Message to FrenchrafeEdit/Delete MessageReply w/QuoteDirect Link to This Post
Yes!
I use 225/50 R15 up front and 235/50 R15 on the rear.
Toyo Proxes R888 semi-slicks.

Cheers 😉

------------------
"Turbo Slug" - '87 Fiero GT. 3800 turbo. - The fastest Fiero in France!
https://youtu.be/c4Cu7_2OgYc
https://www.youtube.com/cha...1wZvWQlkYxTjivW_0XNg

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hyperv6
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Report this Post08-17-2022 05:32 PM Click Here to See the Profile for hyperv6Send a Private Message to hyperv6Edit/Delete MessageReply w/QuoteDirect Link to This Post
I have 225 /50 /16 all around. No issues.

These are the tire size Herb Adams ran on his showroom stock Fiero.

Steering a slightly heavier.

I also have the Herb Adams VSE sway bars 1” front 1 1/4” rear.

[This message has been edited by hyperv6 (edited 08-17-2022).]

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billy bee
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Report this Post08-17-2022 07:44 PM Click Here to See the Profile for billy beeSend a Private Message to billy beeEdit/Delete MessageReply w/QuoteDirect Link to This Post
Thanks for the feedback. I appreciate the thoughtful replies. I have four Hankook R-S4s on the way!

I am sure these questions (or other similar questions) get asked frequently. I was just in a hurry for info and wasn't having any luck with the search function. So, thanks for the speedy, nonjudgemental help.

Just for fun, I have attached a picture of the car. It has just been sanded for paint (Tractor Supply sells oil based enamels). Painting starts tomorrow.

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Patrick
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Report this Post08-17-2022 08:33 PM Click Here to See the Profile for PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by billy bee:

So, thanks for the speedy, nonjudgemental help.


Maybe next time mention the year of your Fiero.... because if it's an '88, all the above advice is potentially wrong.
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cvxjet
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Report this Post08-18-2022 01:02 AM Click Here to See the Profile for cvxjetSend a Private Message to cvxjetEdit/Delete MessageReply w/QuoteDirect Link to This Post
Billy, I did some odd things to my stabilizer bars to improve both turn-in and drop-throttle-oversteer. The car turns in much quicker yet cutting the throttle at the limit in a turn only tightens the car's turn-radius a bit. >>More responsive AND safer handling.

Here is a thread on what I did; https://www.fiero.nl/forum/Forum2/HTML/140674.html
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hnthomps
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Report this Post08-18-2022 01:01 PM Click Here to See the Profile for hnthompsSend a Private Message to hnthompsEdit/Delete MessageReply w/QuoteDirect Link to This Post
I am running 265 x 50 x15 tires on the front of several Meras using the Chromadora rims. Several have also been lowered 0.5 to 1.0 inches. The only issue that I have is sometimes a slight rubbing when doing a sharp turn at parking lot speeds. The steering force at very low speeds is also increased somewhat but is still acceptable. I would use the OEM size of 245 x 50 15 tires in the front, but I cannot locate any company that currently makes them for road use.

Nelson
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