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> Big tires on flared 914-6s, How big of a tire can I get
Qarl
post May 16 2003, 11:38 AM
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My flared six will have 9x16 Fuchs in the rear and 8x16 Fuchs in the front

How meaty of a tire can I get on the rear?

245/45/16?

According to Tire Rack, a couple of manufacturers make 255/50-16 tires

http://www.tirerack.com/tires/Compare1.jsp...ark=1&do=Search

Can I squeeze in some more meat on my backside? (Sorry, I coudln't resist wording it that way!)

Thanks!

Karl (IMG:style_emoticons/default/driving.gif)
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SirAndy
post May 16 2003, 11:42 AM
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if the offset of the wheels is right (might have to play with spacers) you'll be able to get a 285 under the back ...
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SirAndy
post May 16 2003, 11:47 AM
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if you have FG flares, make sure to shave off that inner lip at least around the top. it's usually way to big/wide ...

you want the tires to come out as far as possible.
here's a pic of my car, with engine and tranny in it, i can barely get my fingers between the fender and the tire.
i have 225 on 7" wheels with 1 1/2" spacers. still have lots of room on the inside, with the same offset, i could (and will eventually) run 9" with 285 tires ...

Andy
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airsix
post May 16 2003, 11:50 AM
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I think you'd be best off with a 245 even if bigger will fit. 245 is just right for a 9" wheel. If you want wider tires I'd get 10" wheels first. JMHO

-Ben M.
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Joe Bob
post May 16 2003, 12:36 PM
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I had 245s on an 8 inch wheel....put a 1 inch spacer to fill the well and get a wider track.....
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BIGKAT_83
post May 16 2003, 12:44 PM
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I'm using a 9.5 / 17 racing dymanics wheels from a 930 turbo car on a FG flared 914 with 255/40/17 . I had to trim the inside lip of the flare. This is the biggest tire that my car will take. When I replace these I think I'll use a 245/45 (IMG:style_emoticons/default/smile.gif) (IMG:style_emoticons/default/smile.gif)
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Qarl
post May 16 2003, 12:51 PM
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I have the 930 turbo 9x16 rears and the 944 8x16 fronts. I believe those are the correct offset combination for the application.
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si2t3m
post May 16 2003, 01:27 PM
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IMHO,

I had 16x6's with 225 rubber all around. From the charts on tire rack, 225's fit a 6inch rim. But the car felt funny in turns. The sidewalls are at angle with 225's on a 6 inch rim. It looked good (poseur) but gave crappy handling. Also, doing a DE last summer showed me that the 225 gave alot of tire deflection on that 6 inch rim (rear tire rubbed on the trailing arm and the inner fender on the passengers side in a 180 hairpin)

I just put some 16x6's with 205's in front and 16x7 with 225 for the rear (after a little rear fender massage...). Car feels completely different. It feel way more connected to the road that before.

I wouldn't go wider than 245 on 9's. It might look good with something wider, but you will loose on handling.

Marc-André
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SirAndy
post May 16 2003, 01:44 PM
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QUOTE(si2t3m @ May 16 2003, 12:27 PM)
I wouldn't go wider than 245 on 9's. It might look good with something wider, but you will loose on handling.

now wait a minute. you say 225x7 feels good (which i second!) and then you say don't go wider as 245 on a 9" ...

where are the 8" in your calculation?

245 seems like a very good fit for a 8" (which is what i'm gonna run in the front),
so what would be wrong with 285 on 9" ???

9 x 2.54 = 22.86 centimeters

285 x 9 = 28.5 cm on a 22.86 cm rim = 1.25 ratio
245 x 8 = 24.5 cm on a 20.32 cm rim = 1.21 ratio
225 x 7 = 22.5 cm on a 17.78 cm rim = 1.27 ratio


sooooo, the 285 x 9 is even a slightly "better" fit than the 225 x 7


Andy
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J P Stein
post May 16 2003, 02:49 PM
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It's certainly possible to "over-tire" a car.

Why go to monster meats on the rear?....the car will push like a pig....leaving power oversteer out of the equation for the moment.

Then there's un-sprung weight....tires as
suspension components (springs), keeping the tread
flat (or in contact with) on the ground as the suspension moves, ride height....it's an endless list.

Throwing on fat meats
may look nice to some. That's what the ricers do...they are fun to watch at the AXs. (IMG:style_emoticons/default/biggrin.gif)
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Brad Roberts
post May 16 2003, 02:59 PM
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I tend to agree with JP on this..

Wider track = better.


B
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SirAndy
post May 16 2003, 03:01 PM
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QUOTE(J P Stein @ May 16 2003, 01:49 PM)
Throwing on fat meats
may look nice to some. That's what the ricers do...they are fun to watch at the AXs. (IMG:style_emoticons/default/biggrin.gif)

sooo, you think people do things like this just because they like RICE ?
hmmm, maybe you're right, after all, i'm the one who just got that Carbon Fiber Dashboard ... (IMG:style_emoticons/default/rolleyes.gif)
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Qarl
post May 16 2003, 03:22 PM
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So.... what is everyone saying?

Stick with the 245s in the back and 225s in the front?
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SirAndy
post May 16 2003, 03:42 PM
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no (IMG:style_emoticons/default/cool.gif)
i say, go 245x8 in the front and 285x9 in the back.

just my 2 cents of kraut & rice ...
Andy
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J P Stein
post May 16 2003, 05:48 PM
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QUOTE(kellzey @ May 16 2003, 01:22 PM)
So.... what is everyone saying?

Stick with the 245s in the back and 225s in the front?

How would I know? (IMG:style_emoticons/default/blink.gif)

I have 225/45 X 15 at both ends....but no flares to fill up and my needs are prolly different than yours.

Something to ponder.
The 914 came with the same size tires at both ends.
I think most will agree that it was well balanced.
More grip is what I'm after, whle maintaining decent balance. A touch of oversteer or understeer is easy to deal with.

When I get ulf out on a dry AX course with this new set-up, some of my ponders will have answers.
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airsix
post May 16 2003, 06:31 PM
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QUOTE(kellzey @ May 16 2003, 01:22 PM)
So.... what is everyone saying?

Stick with the 245s in the back and 225s in the front?

Since you already have the wheels it's not just a question of what's best for the car - it's what's best for the wheels AND the car. I have 245's on 8's and they are to wide for that wheel IMHO. On the front I have 225's on 7's. Again, to wide for the wheel IMHO. I think those tires would be just right on 8's and 9's.

-Ben M.
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Jeroen
post May 16 2003, 06:43 PM
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hmmm... this thread seems like a deja-vu (IMG:style_emoticons/default/biggrin.gif)

285's on 9"?
Not on 16" wheels I'd say. On 15" (very) maybe...

I've got 8x16 on the rear of my 911 now with 245/45/16 tires
They look better, but I think 225's would work/handle better

So, Karl, to answer your Q, yes... 225's on the 8 and 245's on the 9

Andy, we just have to agree that we disagree (IMG:style_emoticons/default/biggrin.gif)

cheers,

Jeroen
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SirAndy
post May 18 2003, 12:24 AM
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QUOTE(Jeroen @ May 16 2003, 05:43 PM)
Andy, we just have to agree that we disagree (IMG:style_emoticons/default/biggrin.gif)

pas de probleme (IMG:style_emoticons/default/wink.gif)
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J P Stein
post May 18 2003, 08:50 AM
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QUOTE(SirAndy @ May 16 2003, 01:01 PM)

sooo, you think people do things like this just because they like RICE ?
hmmm, maybe you're right, after all, i'm the one who just got that Carbon Fiber Dashboard ...  :rolleyes:

"Rice" may have been too harsh of a term.

To my way of thinking, tires/wheels that detract from the handling are....what?...inelegant?

BTW, my first choice for my dash was carbon fiber, but I couldn't find what I wanted. (IMG:style_emoticons/default/biggrin.gif)
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drew365
post May 19 2003, 08:59 AM
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I mounted my new Hoosiers yesterday. Taped to the tire was my receipt from Tire Rack and a pamphlet from Hoosier, both with some good info. What's relevent to this thread is the receipt states that the 205/45/16 should go on a 7" to 8" rim, I put them on a 7", and the 245/45/16 should go on a 8.5" to 9.5" rim. I put them on a 8" and the side wall does have a very noticable bulge compared to the fronts that are pretty flat. I'm thinking of looking for some 8.5" rims or after these wear out going with 225/45/16 on the rear. Also the pamphlet shows the amount of air that should go into the Hoosiers as 31 to 36# cold. This is way more than I've been running.
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