Has anyone tried this before and got away with it? I heard you can sometimes get away with as much as 2" less then what the tire manf reccomends on a certain width rim and BFG reccomends 10-12" rims.

 

Bad idea.

 

Very bad idea IMO.

 

For everyday street use, I agree that it's a bad idea.

For autocross or road course use, you might be able to pull it off. A lot of the autocross guys are running 285s so I know they fit and work. I'm running 265's on the 18X8" wheels but not for everyday street use. They're a PITA to mount so you may have problems finding someone willing an able to try it.

 

Sorry but I am having trouble understanding how oversized tires without the proper sidewall support help in any type of driving situation.

 

Oversized tires provide a lot of traction. Lower profile (30 vs 45) allows for shorter sidewalls along with reinforced sidewalls provides more than sufficient support and stiffness.

 

Won't that end up looking like "10lbs of **** stuffed in a 5lb bag"?

 

If you can afford this wide tire, then why not buy the appropriate-sized rims also!?

 

yeh, suck it up and buy wider wheels. You can go wider AND lighter than stock for relatively cheap nowadays. case inpoint, Enkei RPF1, RP03, Axis Reverbs, and several others all under 1500 dollars.

 

Who am I to question your expert reference?

 

How ironic is this quote?

 

That is IF he runs a 30 series, if he sizes it so tire diameter is the same as stock he will have a lot of sidewall movement in turns. Hell I think even if he has a 30 profile and shrink the sidewall by an inch cramming that much tire on that size rim is begging for lateral movement, and will feel like a bath tub. I highly suggest getting a wider rim.

 

Good question. Here is a race story i posted on another forum:

During one of my escapades to Mexico's Hwy 942, i saw a white STi, dropped with a body kit and exhaust. He was trailing a blue Lotus Elise and i guess they where heading to a nice car meet down somewhere. I catch a red light and noticed the STi was in the middle lane right behind me. The light turns green and i roll along enjoying the Mexican sunset when the STi lays into it and passes the car next to me and takes off. What the hell, the Federally are prob taking a siesta. I lay into my 2nd gear and take chase, the STi already has a 2 car lead and rolling, end of second i stopped the pull. I start to pull him through 3rd, passed him around the end of 4th and put a few more on him for good measures. We slowed down to about 40 and he slowly passes me with a open mouthed stare. I wish i could have read what was going through his mind at that moment. I tried to wave at him but he was still wide eyed at my car. I guess he liked my stock wheels?

I like to keep the car sleeper. Ive embarassed a few C5s and a stock C6 vette. The look on their face when they lose and thought the 350Z they where racing was stock... priceless.

edit: im a dick.

 

I think for the price of an 18" drag radial, you could purchase a cheap light set of 16"-17" wheels and corresponding tires and get better grip in the end on a correctly sized wheel. Sell the 18's and you'll probably end up on top moneywise

 

why would turning performance matter for a drag radial?

 

Even if i had the ideal width rim for these drag radials, i dont think i would put much lateral loads on them. Dont all DR have soft sidewalls? Even if it was safe to, the rear end would feel bouncy and vauge, no?

If i did get a second set of wheels, id rather put some nice RT-615's on all four courners and use the stock 18x8 for the DR's. Back full circle. So i guess i should have been more specific in my original post.

Would 295/35-18 BFG DR be safe on the stock 18x8 for just drag racing. I dynoed around 475 ftlbs and assumming the drag strip has alot of VHT on that night, would it be remotely possible to break the tires off the rims?

And thanks all, i really apperciate all the comments.

 

I had a 265/35/18 on the 18x8 OEM track wheels and that was pushing it.

 

Maybe i can find some 265/40 still in stock. BFG doent show this size on their website any more but they use to make them. I want to keep a 26.5" - 26.0" outside diameter and the 295/35 where 26.2. Does anyone know what a 265/40 would work out to outer dimater wise?

 

265/40/18 = 26.2 outer diameter

 

I'm basing this off the assumption he wants to drive on them, because he stated he didn't want to buy rims. And if he plans to drive them on the street you will be turning and notice a lot of rear squirm, more so than if you fit them to a properly sized rim. If he kept it strictly for the strip I don't think he'd have much of a problem.