15" Tire sizes- Will these fit

[Ace23]

Originally Posted by Shootnride

You really need to take into consideration the gear ratios in your transmission when making a decision on your rear drive gearing. First gear is especially important. I have a 3.27 first gear and am running 3.73 rear end gears. This combination makes first gear borderline useless. I wish I had your 3.31 rear end gears.

Also, when you're making a decision on tire sizes, make sure that the sizes that you choose will allow you to set the car at the ride height you want without creating any rubbing issues. I personally made an error in judgement with my first tire size selection and it was a little costly to remedy that mistake.

Just some food for thought.

Ted

Ted
Thanks for the insight. I have exhausted second strike gearing calculator and while I recognize it is only a simulator I don't think the 3:31's are going to be enough gear. The current setup is running a 315-35-17 so when I go to a 325-50-15 that takes quite a bit of gear away. I figured with the 6 speed and the tire swap the gearing is going to need attention. The 3:31's were okay on the street but I always wanted a bit more gear but never had the tires to support it.

Originally Posted by xb-60

Have you used Superformance's Second Strike Gearing Calculator? If not, well worth a look for simulating different gearing setups.

Cheers
Glen

Glen,
I have run this a thousand times. Based on going up in tire size the following occurs.....if I ran a 3:90 rear gear it would be like my existing setup as if it had a 3:73.....if I ran a 4:30 rear gear it would be like my existing setup as if it had a 4:10. Going from the TKO-600 .84 to the T56 with 2.66 first gear I am thinking the rear gear isn't worth doing unless you were changing the actual gear from a 3:31 to a minimum of a 3:90 or higher. I would think the sweet spot for my driving style with drag radials will be a ratio between 3:73 and 4:10.

Originally Posted by Andrewyoung78

Ace, my new 275/50 setup is lightly on the steering then the 255/60. Its a cruiser and occasional back road driving. I finally achieved the looks that I really like on the superformance cobra. Of course this setup is not for autocross or road racing buy suit my driving style thats all matter.

Thats great to hear you are happy with it considering so many people say it can't or shouldn't be done. Would love to see some pictures of the setup. I can PM my phone number if you want to text them.