325/50/15 BFG Drag Radial

[Warp6]

Anyone tried this on an 8" rim with 3 1/2" backspacing? If so, got pics?

 

[Intercooler]

Look at my thread on big tires. It contains sizes and I venture to say they will without a doubt not fit with 3 1/2" BS. Actually with any BS without sticking out the wheel well and touching the frame.

 

[Warp6]

I am currently running 275/50/15's and I think they are a tad too short 25 1/2". I'd like to find something in a drag radial that is 28" tall. I may have to go with MT ET Streets (bias ply) If BFG just offered a 295/50 or a 305/50 in the Drag Radials???

 

[Intercooler]

Sounds like you are in the same boat as us. Check out the thread. The 275/60/15 BFG Drag radials are 28" tall which is perfect.

 

[Joe 1320]

The section width of a 325 is too wide for an 8" rim. It will pull the sidewall in too far and cause the tread to not remain a flat contact patch. You will need a 10" rim for that tire.

 

[NoSlix]

Actually, some of the fastest passes on that 325x50x15 tire have come on 8" wide wheels. Go to a NMRA event and you'll see lots of Mustangs in the Drag Radial class running 8" wheels while going low 9's to high 8's at close to 160mph. I've tried 8", 9" and 10" wheels with them and have not seen more than a few hundredths difference in 60ft between all three. The 275x60x15 is basically the same as a 28x9" sized slick and is sooooo much easier to fit. FWIW, we've gone 1.39 60 fts on the 325's and 1.42 60 fts on the 275's so they're very close.

 

[Joe 1320]

Just because someone does it, doesn't mean it is safe or the best way. The reason little difference was observed is that no larger tire was required in the first place. That tire on a 10" wheel would provide a better footprint, but the car may actually lose a mph or two due to the additional weight. Ideally, you want the smallest tire and wheel combo for the lowest weight to get the job done. I've gone low 9s on a 18.5x31 and done the same thing on a 10" tire. The 18.5s actually cost me 2 MPH due to the additional weight , but the same ET. No way I would run a 325 on an 8" rim. While it is possible, it is not the way to go. Besides that, the manufacturer recommends a 9-12" wheel. 8 is a no no.

 

[Warp6]

Anyone got any pics of the 275/60/15 mounted to an 8" rim on a TR?

 

[Warp6]

I don't understand...

why is the tread width different on a 275/50 vs. a 275/60? I thought the second number(series/height) was just a % of the first number (width) In Summit's catalog the tread width of the 275/50 is 10" -- the listed tread width of the 275/60 is 8.8"

 

[azgn]

I use 275X60 BFG DR's for a street tire on 8" Centerlines(4" BS)......they fit great, but they are a tall tire and sorta jack things up in the rear (26" is too small for my combo tho)

they have a smaller section width than the 275X50's, so clearance is not an issue

 

[blackbuick87]

I am sure the 325's work great on Mustangs but they will not fit a TR's wheel well. Many on this board are using 275/60's with no problems. The 275/50's I have are coming off next year because they rub if I hit a bump with someone in the back seat

 

[BarnesGN]

Warp6 do you plan on ditching your old tires. I would like a set to have for the occasional drive up to cook out, if yours are not to shot.

 

[Intercooler]

Re: I don't understand...

Originally posted by Warp6
why is the tread width different on a 275/50 vs. a 275/60? I thought the second number(series/height) was just a % of the first number (width) In Summit's catalog the tread width of the 275/50 is 10" -- the listed tread width of the 275/60 is 8.8"

If you go to www.tirerack.com and click on specs it will give you definitions of what it all means. Basically a 275 is 275mm wide or 10.83". The 50 in 275/50 is the sidewall which is 275mm x .50 or 137.5mm or 5.41". The 275/60's would be 165mm sidewall or 6.49". Couple these with the cross section and that tells you what the tread width is. HTH.

 

[GTEATER]

You ask for it you got it....275/60/15 = 28.0" OD DF

275/50/15 = 26.1" not 25.5"
325/50/15 = 27.9"

As far as width, the 1st # indicates this, but is effected by wheel width. The tire width is changed about 5mm per .5" change in wheel width. Narrower tire on wide wheel my actually equal a wide tire on a narrow wheel(all about contact patch).

Even if you had the HP to pull BIGFOOT's tires, it ain't gonna help on the big end with your DADDY's TTA

 

[Warp6]

hey D-F, you're gonna need some super sophisticated military optics to get a view of my tail lights...again, biotch...then hope the dog police don't pull you over for driving one. That POS TTA wouldn't pull a greasy string out of a cat's a$$ and you know it. I'll say one thing though, you're car sure is pretty.

 

[GTEATER]

perrty like your mouth....

police dog ...you better get some sleep, or are you having nightmares about me out running you then running over to your MOm's?

 

[REDS HOT AIR]

any pictures of a regal with 325/50 's on it?

i was thinking about them myself ...will a frame notch and fender trim get them to fit?

 

[UNGN]

Originally posted by GTEATER

275/50/15 = 26.1" not 25.5"

That would be true in a perfect world, but Nitto 275/50's measure 25.75 when new and get smaller from there (as small as 25.35 when the tread is all gone). BFG 275/50 DR's are 26.1 and have a lot less tread depth, so they will get no where near that small.

 

[GTEATER]

WARP6 has trouble with numbers anyway. The 25.5 was something he saw from an old IQ test...before he started killing brain cells huffing paint.

 

[Warp6]

I got that measurement from my car. Mr Neal, I used a tape measure...it's a neat little invention that's been around for quite some time.

As for the 275/50 vs. 275/60 -- I understand the aspect ratio of tires, I just don't understand why a 60 would measure narrower than a 50 if the wheel they were mounted on were the same.