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245 on 7in cookie cutters

Can it be done? Any pictures

I heard Ahmet did it how did it work??
Old 04-29-2003, 01:08 PM
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that'd be sweet.. if it works....
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Old 04-29-2003, 01:22 PM
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NO WAY...



SHAUN
Old 04-29-2003, 01:38 PM
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there must be somebudy who tried it?? and has some pictures
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Old 04-29-2003, 02:10 PM
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I have 225's no problem I think it may work and work fine!! 245 50's would look really good!! if they would fit. I wish the cookie cutters were 8in
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Old 04-29-2003, 02:11 PM
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I've seen 285's but the sidewalls were so pinched in, it looked absolutely goofy. He could't understand how I could beat him so badly at an autocross on my "skinny" 215s. Sidewall can't do it's job properly.

Have the tire shop mount one, and see how it looks.
Old 04-29-2003, 02:22 PM
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285 on 7in rims!!! wow I did not think that would be possible
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Old 04-29-2003, 03:32 PM
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http://groups.msn.com/944world/modified944na12gees.msnw?albumlist=2

Checkout the picture at the bottom left hand corner.
Ahmet
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Old 04-29-2003, 03:36 PM
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are those 245's ??????
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Old 04-29-2003, 03:56 PM
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Just got my 951 a few weeks ago....they didn't have Fuch wheels...came with the dials....and 245s in the rear...

Man.... the Bridgestone Potenze RE720 tires sure have a loud "hummmm" going down the freeway! I wish it was a quieter ride....
Old 04-29-2003, 05:42 PM
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Andrew,

When I got my S2 it had 245 Bridgestone RE730s at the rear, and the noise was incredible. So I changed them for new Yokohama AVSs - and all was quiet for about 1000 miles - now they are getting noisy again.

I am beginning to suspect that the feathering, which is what causes the noise, is due to putting oversized tyres on the wheels. When these 245s are worn I'm going back to 225s.

By all means everyone put oversized tyres on but theres a reason they recommend a certain tyre size for a certain wheel size - you can't go oversized without some penalty.

Mark
Old 04-29-2003, 06:22 PM
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will 245 fit on the front

can anyone else post pictures of there 245's on the car
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Old 04-29-2003, 07:28 PM
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Quote:
Originally posted by Mark_944S2
Andrew,

When I got my S2 it had 245 Bridgestone RE730s at the rear, and the noise was incredible. So I changed them for new Yokohama AVSs - and all was quiet for about 1000 miles - now they are getting noisy again.

I am beginning to suspect that the feathering, which is what causes the noise, is due to putting oversized tyres on the wheels. When these 245s are worn I'm going back to 225s.

By all means everyone put oversized tyres on but theres a reason they recommend a certain tyre size for a certain wheel size - you can't go oversized without some penalty.

Mark
Mark,

Thanks for your validation. I am going to try 225s when the 245s wear out. In the meantime, I am going to try and enjoy the 245s...they do give the car more of an aggressive look.
Old 04-29-2003, 10:30 PM
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I've made several posts on tires, you can read all about it if you wish.

There's only one commonly available tire in 245/50/15 size approved for 7 inch wide rims (and street legal w/DOT certification), and that is the Dunlop.

They seemed to provide more grip, but if you don't mind having your speedo a tad off, and the "funny" look of the tires, 225/50/15s get my choice from a performance oriented perspective. They will lower your car, have stiffer and shorter sidewalls (that translate to more feel also), be cheaper, cause less drag vs. a comparable 245mm wide tire. I'm speaking of the 225/50/15 size specifically. 225/55/15 WOULD have been my choice, but only a hanfull of tires are available in that size, again speaking of the DOT legal street tires. If you're willing to pay $150/tire this would be the tire to get. Otherwise choose from the other sizes.

Again, I've posted a lot more on this, please search.
Ahmet
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Old 04-29-2003, 11:28 PM
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To answer more questions, the picture I posted a link to is the view of 245s. They did rub slightly under very heavy driving (a relatively large road undulation while the suspension is close to fully loaded). I only say that as a precaution, my turbo rubs it's rocker extensions on the ground more often (with yellow Konis on full hard, on 225 street tires) than my NA did w/245s all around so it's not really an issue.
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Old 04-29-2003, 11:33 PM
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225/55/15 is the way to go If you got the dough.
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Old 05-01-2003, 07:08 AM
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A 245 size tire will have a width of 9.653 inches. You should never have more than one (1) inch difference between the rim bead and the overhange of the tire from the rim bead.

Overhange is the outer most point of the tire when mounted on a rim. Usually midpoint on the tire sidewall between tread and bead.

Tire width - rim width / 2 = X

With a 7 inch rim you would have 1.3265 inch overhange.

With a 8 inch rim you would have .8265 inch overhange.

This is why a 245 will not work on a 7" cookie cutter, but will work on a 8" phone dial.

When you have a large a offset, the tire will roll under the rim and can pop the bead off the rim under hard cornering. When this happens, you will usually have a large repair bill. Save your repair bill money and buy a good set of 225/50-55-60 tires for the 7" rims.
Old 05-01-2003, 08:20 AM
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thanks for the advice!! rob
any thoughts on 225 60's are they too high sidewalls? or would they work??

Chip
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Old 05-01-2003, 12:46 PM
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Chip,

I currently run 215/60X15 on my 83-944, with 225/60X15 Goodrich R1 auto cross (dot approved) for x-crossing.


I might go to a 55 or 50 series tire when I replace the 60 series.

The diameter of the smaller sidewall will affect odometer setting and overall speed of the car (it will reduce the top speed, but will give you quicker acceleration).

Remember we are only talking a couple of MPH at top speed.

The car should handle better with the lower profile tire and handle slightly better.
Old 05-02-2003, 07:22 AM
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