E-Body Tire Combos

[GoodysGotaCuda]

hello 72bluNblu,

so you are running a wheel spacer? 

I measured.. & from the face of the rear hub I have about 6.5" to the leafs & roughly the same to the inside of my fender lip...

thanks for the help

Yes. 7/16" spacer, 5.9" backspaced 18x9" wheel. (with 3" studs for good lug thread engagement since the alum wheel hub is so fat)

[greenzeppelin]

I just did some quick number crunching...

if your running a 18x9 with 5.9(151mm) backspacing & a 7/16(11.1mm) wheel spacer than your new backspacing would be 5.5(140mm)

and you said you've got 1/2 of clearance still than i should have plety....No?

thanks again

[GoodysGotaCuda]

I just did some quick number crunching...

if your running a 18x9 with 5.9(151mm) backspacing & a 7/16(11.1mm) wheel spacer than your new backspacing would be 5.5(140mm)

and you said you've got 1/2 of clearance still than i should have plety....No?

thanks again

You'll have a 1/2" less backspacing, and a 1/2" wider rim. Sounds like you'll be an 1/2" or so closer to the 1/4 panel? Which depending on the tire, you'll be very close to the 1/4 panel. In comparison to my setup.

Either way I think it will be close. When I bought my wheels I wanted more backspacing than I needed. You can always take it away by adding a wheel spacer, like I did. You cannot go the other way. If it's too much into the 1/4 panel, then you are SOL. Too much into the spring, you can space it off.

Just my 2cents. I number crunched the best I could and mine is working out well.

[greenzeppelin]

See and your rears fit pretty tight right?

your tires are 11.6" wide where as the tires im going to run will only be a 10" wide so that extra 1.6" is my buffer i think..

beacuse like you said ill have a 1/2 less backspacing w/ a 1/2 wider rim than your running..

thanks agin

[GoodysGotaCuda]

See and your rears fit pretty tight right?

your tires are 11.6" wide where as the tires im going to run will only be a 10" wide so that extra 1.6" is my buffer i think..

beacuse like you said ill have a 1/2 less backspacing w/ a 1/2 wider rim than your running..

thanks agin

That is an advertised specification on the tire width. Depends on the rim width as well.

+ Why such a small tire on a 9.5" rim anyway? I have 255s on the front 

[cudazappa]

here's a pic of my car with 17x8s -2 offset (28mm offset rims and 30mm spacers) and 245/45s:



In the back I can go to a 9 in wide rim by going to 5.25" BS and trimming the fender wheel lip a little bit (have a couple rough spots from the stamping).

I'll probably end up going 16x9 in front and 16x10 in back for when I get serious about racing.

[tommyg29]

I think there is very limited tire selection with a 16"

[cudazappa]

I think there is very limited tire selection with a 16"

Not for purpose Autocross/road race slicks.  Hoosier and Kumho still have good sizes.  I have a feeling these 17" Yokohamas are going to be toast after this year... BUT I did get them cheap enough...

[greenzeppelin]

heloe cuda zapp,

so how much room do you have to the fender lip from the tire...

& how much space to the leafs?

& your saying that with 5.2bs on a 9 wide rim your gonna be to close to the lip?

thank you for clarification

[cudazappa]

so how much room do you have to the fender lip from the tire...

about 1/4" to some rough edges leftover from the 1971 stamping process.  sticks out at least another 1/4" over my wheel well trim in areas

& how much space to the leafs?

about 1 inch

& your saying that with 5.2bs on a 9 wide rim your gonna be to close to the lip?

yes.  if I trim the excess sheetmetal I will be fine, but it's tight.  When I decide to go to 10" wide rims I will be relocating my springs inboard and running custom 3 piece rims.

[Kevin71]

How much ground clearance do you have with those 17" rims?

[GoodysGotaCuda]

How much ground clearance do you have with those 17" rims?

I'd imagine it to be inconsistent between vehicles based on engines, springs (new, old, aftermarket) and how high the torsion bars are cranked (or not). Tire height is the important part. My front 17s are 27" high and my rear 18s have 28.5" tall tires on them. Probably more 'ground clearance' than most 14" or 15" setup ebodies. I think the factory 14" tire my car had was a 26" tall tire..

[cudazappa]

How much ground clearance do you have with those 17" rims?

I have about an extra 1/2" over the stock 14" tires.  Originally my car came with 195/70R14s (24.75" tall).  The 17s are 25.75" tall.  And I lowered the front back down to where nothing rubs (yet).  But I have more room under the K then when I bought the car (from the original owner).

I'm still halfheartedly searching for a set of 17x9s for my 275/40 race rubber....  and that's just a little shorter than what I have now...

Of course I also have a pair of 235/60 on 15x7 and another pair of 255/60 on 15x8 rallyes should the fancy strike me.  BTDT right now...

[rusty dodge]

Front 17x8 (4.5"bs or 0 offset) 245-40-17 Kuhmo.
Rear 17x10 (6"bs or .5" offset) 315-35-17 Sumitomo. Tire is 12" wide on this rim.
3/4" rear spring relocation. Lowered about 1", maybe more.

[greenzeppelin]

Well New rims & tires, second set actually cause they sent wrong bolt pattern first time, showed up today!!

The cars not mobile right now so i could only mount them and see how it sat & check clearance, to see if my homework is correct really!

But as stated earlier, im running

Tires: Mickey Thompson Sportsman SR (slight flame pattern!!)

 Front:  26 x 8 x 18
 Rear:  28 x 10 x 18

Rims are Boss 338

Front: 18 x 8,  w/4.5bs  (+2 offset) 
Rear:  18 x 9.5 w/5.1bs  (-4 offset)

Im happy to say they fit!! at least the rears do!

Im glad I went with the 10" wide & not the 12" wide tires.. i have a 1/2" of room on the passenger side & about an inch of room on the driver side between the springs & the tire sidewall.