just curious whats the widest tire you can fit on the stock 8'' wide fd wheels. i was thinkin of doin 255 just wanna know if i can go any wider. thanks for any advice

 

245/45 16

 

that sucks ^^^ good excuse to just get new wheels and tires

 

Rynberg is right, and actually it is.

I'm trying another set of stickier tires in that size (245/45-16 - Hankook Ventus RS-2s)...but i think when it comes down to it i'm going to need wider in the rear. The stickier tires is just a temporary measure so i can justify getting new wheels later on down the road. Personally, i'll probably go for 17's for lighter weight and slightly better ride than 18's(i run 600lb/in springs and it's a daily driver ).

You might be able to shoehorn 255's on an 8" rim, but i'm sure no manufacturer will tell you to. Not only will it not fit properly and perhaps leak, but you'll be pinching the tire so much that a lot of the tread won't be flat on the ground and the sidewalls will be bent around and not work like they're supposed to. All that = worse handling and traction than you'd get with the 245s.

 

Before anyone posts about trucks with 275s on 8" wheels, keep in mind that the tire has to be low profile to fit on a 16" wheel in the RX-7 wheel well. Low profile tires have a tighter range of recommended wheel widths that tall profile tires. There is an easy way to answer this general question -- look at the recommended wheel width range on the tire spec sheets (available at http://tirerack.com or the tire manufacturer's web site). For a given tire size, most tire models will have a similar recommended rim width range, but there is occasionally a bit of variation. Check the spec sheet for the specific tire model that you are interested in.

-Max

 

hey Efini 7 with all those mods r u able to launch ur car at all with 245? i think im gonna get the PFC so ill have basically the same mods as u minus the SMIC

 

Traction depends on more than just tire size. If you had a budget of say $200 per tire and your choice was a 275 'ok' tire, or a stickier 245; your money would be better spent on the stickier 245 tire.

That doesn't mean slap 215's on your car, but just use a little more thought as to what you need and what's within your budget.

 

with a stickier tire they wear faster right? doesnt every manufacture rate there tires differently? speed rating has nuthin to do with the stickieness of the tire correct? so what would be the stickiest 245 i could get?

 

http://ec-securehost.com/OnlineTires...OXES_T1-R.html

 

I can launch fairly well, but it can be a bit tricky. I usually have to keep the revs lower than i'd like and pull it out of the hole on 1st, but after that it's all good. But then again, the stiff springs that i run aren't good for straight drag-type launching. Ideally you'd want softer (even stock) springs for optimal transfer of weight to the rear tires...giving them more grip. With the stiffer springs i get very little weight transfer on launch. If that's what you really wanted, though, i'd definately go for some decent 275 width tires. You'll be able to feed them more power (higher revs at the start) without shocking them loose and spinning all over the place.

I'm also running 14psi with the stock twins. They do fine if you have everything tuned properly (ie get it dyno tuned), but i wouldn't recommend turning up the boost if you still have the stock intercooler. The intake charge will just get too hot and detonating will become an issue.

I've heard very good things about the Toyo T1-R's, but i am running hankook ventus rs-2's. They are a bit softer and stickier than the T1-r, but don't last nearly as long. I'm expecting to get between 12-15k mi out of em. The only other real street tire i know of that may be stickier is the Falken Azeni 615, but they don't come in the right sizes. Plus, at $100/tire from edgeracing.com the RS-2's are a great deal and probably one of the best performance tires for the money, IMO.

Hope that helps.

 

thanx for the info guys still undesided though

 

If all you care about is launching, run around the streets with some drag radials. If you want all around performance, the Toyo's are the best bang for the buck right now.