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mtb01
03-02-2004, 07:14 PM
Need some help here. Just got the 01 and I fore see in the near future new tires all around. I have some questions?

1. Is it cheaper to find on the internet or local dealer
2. What do you all recommend?
3. Can you go larger on the stock rims (wider)?

It currently has the goodyear 245/45zr17 Comp

Also some idea of the price of the tire you recommend. Thanks for all your help. Best site on the Net! :D

tcrews
03-02-2004, 10:48 PM
I like Firestone Firehawk SZ50's.....a great wet & dry traction tire with decent tread life.

Step up to 255/45/17 all around with no problems.

White Venom
03-02-2004, 11:48 PM
i love my nitto 555 extreme's i have 275/40/17 in the rear and 255/40's up front. i have 10k hard miles on them and they still have alot of tread on them.

Bartman01
03-03-2004, 02:56 AM
1. Shop around - many times different shops will have different prices and you can use this to negotiate a good deal at your preferred shop.

2. Stick with the stock 245's or get wider wheels. 255's fit fine, but with throw your speedo off to some degree. Granted it is in your favor since you will travel further than your odometer says you went due to the taller tire.

3. Big debatable question, but here are two facts that might help.

First - no manufacturer that I am aware of specs their 275's for an 8" rim. This means that if you do this you are running the tire outside of its designed parameters and voiding the warrantee. In otherwords if you have a blowout and suspect a faulty tire, you are pretty much SOL.

Second - Mustangs tend to push badly in heavy cornering. Putting wider tires on the rear than on the front will just accentuate this. Not a problem for straight line racers.

Personally I would stick with the same width tires all around unless it is a 1/4 mile or show only car. Better for tire life and handling. If you are going for looks or straight line traction and don't mind the hit in handling then get some wider wheels/tires for the back - you can fit 315's back there with the right wheels and it looks really nice.

mtb01
03-03-2004, 02:05 PM
So what I'm getting from you all is that the 255's will be want I want to go with. There is no problem with the stock rim except throws the mileage off alil? I know you get what you pay for. Thanks for all the help. Anymore thoughts just let me know! :D

mtb01
03-03-2004, 02:42 PM
This may change some things. I'm looking for a great dry tire. I was not very specific when I first posted this. I see alot of these tire summaries saying how great their tire is in the rain. My car will not be driven in the rain.

flynfink
03-03-2004, 03:38 PM
Originally posted by mtb01
This may change some things. I'm looking for a great dry tire. I was not very specific when I first posted this. I see alot of these tire summaries saying how great their tire is in the rain. My car will not be driven in the rain.

Ever get caught in a rain storm? I would only go with a dry only tire if I had a trailer queen.

TCrews is right (Firestone Firehawks SZ50 EP) and the 255's will NOT throw your speed off, it's 10 MM wider not taller, the 94's and 95's came with 255's and most of us think Ford went to the 245 to save a few $$.

Oh, BTW, most of us cannot agree on tires/gears so ...

As far as internet or local shop, you'll save some $$ up front from Tirerack, but a a few $$ more build a relationship with the local shop, it's a good idea since you'll be buying tires often. I use both.

Aaron94
03-03-2004, 05:37 PM
I recently bought tires, i went with the BFG G-Force KDW. I read a lot of reveiws on www.tirerack.com to make my decision based on price and treadwear. I went with the KDW's because of the high treadwear, and wet traction, as my car does see ocasional weather in so cal. If money and weather were not an issue, i probably would have gone with the KD's. The KDW is a good tire even for dry only as well, and i can tell by the amount of tread on these thigs, they will last me quite a while. just my $.02. Oh, i bought from America's tire co., as i have for years. i like their service, lifetime balancing/rotation, flat repair, with little or no questions asked.

Bartman01
03-04-2004, 06:30 AM
Originally posted by flynfink
255's will NOT throw your speed off, it's 10 MM wider not taller

The 45 is a percentage of width - not an absolute size. So if the tire is wider, it will also be taller with the same aspect ratio and rim size.

For my tires (BFG KDW) the 245/45 specs are:
Average diameter: 25.7
Revs/Mile at 45 mph: 810

The 255/45 specs are:
Average diameter: 26.1
Res/Mile at 45 mph: 798

On average their 255/45R17 is .4" taller than their 245/45R17.

FWIW - using an online tire calculator this only puts your speedo off by ~1mph low at 60 (speedo reads 60, you are really going 61) so the difference is negligable.

moonlt
03-17-2004, 12:29 AM
Go with the 17x255/40s, they should be the same diameter as the 17x245/45. I talked to guys racing round track and they tell me their choices are Michelin PilotSports or Bridgestone Pole Positions for the best street tires, with Goodrich and Nittos great in the straight line. Don't go bigger than 255 on those stock 8" rims. Incidentally, if you ever get a 9" rim, check out the 17x275/40 -- last year a magazine tested various tires in both 17" and 18" wheels, and found this size the optimum for the Cobra in turning the best round track times.

tcrews
03-17-2004, 08:07 AM
Don't go with the 255/40/17....too small a profile. Go with 255/45/17 or the tire will look funny. The '94-'95 Cobra came with 255/45/17 on the 17x8" rims.

I've seen 255/40/17 on a '97 Cobra and they didn't look good at all.

Go with the 17x255/40s, they should be the same diameter as the 17x245/45. I talked to guys racing round track and they tell me their choices are Michelin PilotSports or Bridgestone Pole Positions for the best street tires, with Goodrich and Nittos great in the straight line. Don't go bigger than 255 on those stock 8" rims. Incidentally, if you ever get a 9" rim, check out the 17x275/40 -- last year a magazine tested various tires in both 17" and 18" wheels, and found this size the optimum for the Cobra in turning the best round track times.

nckissfan
03-18-2004, 11:18 PM
I was just thinking about tires myself. I am going to stick with the 245/45/17 for my Cobra. What are y'all's opinions on Dunlop tires? I can get the SP Sport 8000 model for $153. Is this a decent tire? Or I was thinking of the Goodyear Eagle HP for $172. I am looking for a good quality tire. I work at a Sam's Club, and they tend to have good tire prices.

flynfink
03-19-2004, 06:59 AM
Prices seem high for non z tires. also , the difference between the 245 and the 255 is so small and the 255's look better.

nckissfan
03-19-2004, 09:13 AM
so a tire with a Y rating is not as good as a tire with a Z rating? Y rating is up to 186mph, while the Z rating is for 149+mph.

Levi
03-19-2004, 09:57 AM
I use the Nitto 555 streets, Frt 255/45-17 Rear 285/40-17 on R 17x9's.
The tires performance is good for street and track and they give me the stance I was looking for.

flynfink
03-19-2004, 10:03 AM
from tire rack.

When Z-speed rated tires were first introduced, they were thought to reflect the highest tire speed rating that would ever be required, in excess of 240 km/h or 149 mph. While Z-speed rated tires are capable of speeds in excess of 149 mph, how far above 149 mph was not identified. That ultimately caused the automotive industry to add W- and Y-speed ratings to identify the tires that meet the needs of new vehicles that have extremely high top-speed capabilities.

W 168 mph 270 km/h Exotic Sports Cars
Y 186 mph 300 km/h Exotic Sports Cars

While a Z-speed rating still often appears in the tire size designation of these tires, such as 225/50ZR16 91W, the Z in the size signifies a maximum speed capability in excess of 149 mph, 240 km/h; the W in the service description indicates the tire's 168 mph, 270 km/h maximum speed.

225/50ZR16 in excess of 149 mph, 240 km/h
205/45ZR17 88W 168 mph, 270 km/h
285/35ZR19 99Y 186 mph, 300 km/h

Most recently, when the Y-speed rating indicated in a service description is enclosed in parenthesis, such as 285/35ZR19 (99Y), the top speed of the tire has been tested in excess of 186 mph, 300 km/h indicated by the service description as shown below:

285/35ZR19 99Y 186 mph, 300 km/h
285/35ZR19 (99Y) in excess of 186 mph, 300 km/h

As vehicles have increased their top speeds into Autobahn-only ranges, the tire speed ratings have evolved to better identify the tires capability, allowing drivers to match the speed of their tires with the top speed of their vehicle.

The eagle hp would not be my first choice from goodyear, check out the GS-d3.

The Dunlop SP8000 is a left over from last year, this years is a 9000, good tire for the $$

nckissfan
03-19-2004, 10:18 AM
ok, I am going to check out some more prices from a buddy in Waxhaw today. I saw the Dunlop 9000 model on tirerack.com. Thanks for the tip.