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Old 04-06-2003, 17:43   #1 (permalink)
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Tyres on 15'' wheels

Hey Guys

I have '90 Falcon S - 15'' standard wheels.

I have 215 tyres all around but the problem is when I try to get a decent takeoff (when Im not being little rough on it) I get too much wheelspin and the back end of car swings a little to the side. I want better grip, so Im thinking of getting 235s for the back two tyres only.

Is it possible to get 235s on the wheels ? Is it legal to have tyres that wide, im not sure what standard was, I think 195 or 205.
I do not want different wheels, I want the standard wheels.

Cheers
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Old 04-06-2003, 17:48   #2 (permalink)
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Yeah i would like to know this also.

What is the biggest tyres you can fit on 15 *7 wheels?
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Old 04-06-2003, 18:04   #3 (permalink)
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I've got the standard EA turbo blade rims on my Ghia and they are wearing 225/60/R15 rubber. Apparently you cannot safely go wider on those rims, but im not sure... i've also had mixed opinions of people saying 235's will fit, but if the tyre guy said no then im guessing hes right
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Old 04-06-2003, 18:06   #4 (permalink)
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I got 225s on my 15's they grip like no 2morrow when its dry but when it rains god help me.
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Old 04-06-2003, 18:24   #5 (permalink)
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Ok, would there be a difference worth making the move from 215 to 225 on the back two tyres ?
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Old 04-06-2003, 18:48   #6 (permalink)
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Not a worth while change from 215 to 225... well that's what I have noticed.

I have seen XF Ghias with 235's on the rear, but since I have not tried it.. I guess I can't say much else about it.
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Old 04-06-2003, 19:12   #7 (permalink)
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Many moons ago, I had 245/50 on 7" rims (14").
Not so many moons ago, a family member had 235/60's on 7" rims (14").

The best size however, is 225/60 (7 x 15").
This size is about the biggest you should go without any excessive bulging. It also keeps your speedo accurate as the overall diameter is almost the same as OEM sizes.

FWIW, I am currently using (F) 235/45 and (R) 255/40 on 17 x 7.5" rims.

Rick.
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Old 04-06-2003, 19:16   #8 (permalink)
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What tyres are you running currently? maybe a change to a better brand/compound at the same time will help traction
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Old 04-06-2003, 20:39   #9 (permalink)
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Im running Bridgestone G-grid tyres. 215 60 15
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Old 04-07-2003, 00:15   #10 (permalink)
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also remember sidewall will be different with different brands of tyres.

my 275x40x17 F1's have a different stance than my 275x40x17 BFG GForce T/A's and the same size DR's. All three sidewalls have varying thickness' as will most tires.
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