upstate

I have a full set of Firestone tires in my garage, about a year old I bought for my Tbird and never put them on. They are Firehawk P235/50 R17 95V. Would these be OK for the Mustang GT. I measured them and they seem to be an inch wider than factory. I know I would loose the Z rating but that's for speeds over 120 I believe. I don't drive that fast anyways. What are your thoughts??

PONY XPRESS

Should be ok. Check your load rating.

If you want to sell the Pirell's let me know.

upstate

PM me with an offer they have 170 miles on them. Load rating Factory 1653 per tire Firestones 1521. Times four is Factory 6612/ Firestones 6084 or 528 lbs different.

RaGsHoCkEy88

ill take ur pirelli's haha

bryman

If you use these, it will throw your speedo off because the overall diameter of the tire is smaller than stock. It will also increase your wheel gap.

Giddyup

Yep....that's what I was getting ready to post to him. B)

upstate

OK then if I go and buy the widest tire to go on the stock rims would a P255/55/17 work/fit ?

38special

255/50/r17 work great.

f1-cobra

Even if the Firestone Firehawk LH tires would fit, I wouldn't use them on the Mustang. We have the same tires on our Lincoln LS and they don't do very well in the rain and snow.

Falchion

Those tires look so good on your car 38, they might be a good alternative to 18 inch wheels?

38special

Update on my BFG GFORCE KDWS

At 23k miles theys still hold the road great on the turns. I may have another 10k left on them before I have to buy new ones.

My Good Years on my old 03 GT grabbed great until about 15k then lost their grip pretty quick. I replaced them at 20k.

All in all I am pleased with my choice for the 05 GT.

topconbob

I just ordered 275/40-18 gforces, you mean to tell me they lose grip at 23,000 miles? I was sold on these over the Toyo T1R's. Anyone have any further information on which is the better of the two?

Pitch Black

how many miles do stock tires last/

bob

Actually its a bit more involved than that, typically as a tire increases in speed rating (apples to apples of course) it tends to handle and brake better than the lower speed rated tire. There is enough of difference in handling that it is reccomended that in the case of two different speed ratings installed on the same vehicle that the higher speed rated tires be installed on the rear (even in the case when two new tires of a lower speed rating are installed on a a vehicle - btw when installing less than a set of 4, its advisable to install the two new tires on the rear if they match the service description of the older tires still on the vehicle). Which is saying alot.

As an example, in a comparison test on two identicle vehicles (miatas IIRC) outfitted with H rated tires on one and V rated tires on the other, there was a difference of about 14 feet (a car length) in braking distance as well as some handling differnces.

As another example, ever see some odd tire/car combos? Toyota Camry fitted with H-rated 14s, Kia Sedona fitted with H-rated 15's, Caddilac Seville fitted with V-rated 16's. nobody drives these vehicles ***** to the wall or like they stole them, rather it was because it was cheaper to fit them with high perfomance tires to cure handling/braking problems without having to go back and redesign the vehicles suspension or brake systems.

Yet another example are early honda/acura cars, the single biggest differnce between these two cars were the tires.

Now depending on how you drive, it may or may not be an issue, as some manufacturers say it is permissible to lower the speed rating on the tires based on what sort of driving you do, but it will have an effect on the handling and braking characteristics of the car. On the other hand, some tire manufacturers do support the lower of speed ratings on on vehicles since it does produce an impact on performance.

Intersetingly the vehicle manufacturer that probably takes this most serious is Porsche, install the wrong tires on a porsche and it will void your powertrain warranty. (typically tires for a porsche like GM's TPEC rating are branded with an N on the sidewall). If your not sure, consult the vehicle manufactuer (dont waste time talking to the car dealer as the janitor probably knows more about what sort of tires should be on the car) for thier reccomendations (granted it will be through a lens distirted by the tort system in this country, but at least they will give you more insightful information than the car dealer can).

Budders

hmm, what do you guys think is the biggest tire i can fit on fanblades?

adrenalin

255/55R18 is the biggest tire you should put on the fanblades

Budders

thanks, i scraped a little against a curb! :bang: so i'm trying to get some tires that stick out a little from the rim

38special

topconbob

If you read my post clearly, you would see that my goodyear tires on my old 03 lost their grip at 15k, the BFG seem to still hold pretty good at 23K and I think they will last me till 33K.