This might be an odd question, but I figured I'd ask it here as RR/AX guys tend to push the limits.

What's the widest tire you've seen on an EG?

I'm currently running 225/45-15 R888s on a 15x7 Team Dynamics ProRace1. I'm considering going to a wider/stickier tire next year.

Not sure if I want to go with the 225/50-15 V710, or something a little "outside of the box." The next setup I'm considering is a set of 255/40-13 Hoosier A6s. The trick will be finding a set of 13" rims that will clear my Integra brakes...most likely Panasports.

I'll stop there...and wait for input.

Thanks in advance.

 

275/35/15 Hoosier A6 (or something close to that for the side wall hight)

 

R u talking about a staggered setup (255 f/225 r) or 255's all around?

The problem you're going to have with the 255's (in addition to finding 13" rims that clear your front brakes) is clearing the fender. Getting them to tuck up front is theoretically possible, but will likely require serious custom suspension work (know someone who is contemplating an inboard suspension that "might" free up enough room under the fender to make that fit). Beyond that, there are two possibilities:
1. Flare them (cut 'em and attach flares, or beat the crap out of them with a hammer).
2. Just cut the fenders and let the wheels stick out.

BTW, if 255/40-13's are something you are considering, but you can't find wheels to clear your brakes (or the wheels turn out to be cost prohibitive), you might consider the 275/35-15 A6's. We run those on the front of the Snot Rocket. The challenge of getting them to clear the fender is still there (maybe a little bit more challenging), but getting 15's to clear your brakes should be no problem.

 

I'd be looking at going 255/40-13 front and back. I'm currently running 7K springs front and rear with a JDM ITR rear bar...yes, it's a little soft.

My tire width change will definately be accompanied by a spring rate change. Actually...now that I type that, I might want to do the suspension change first so I can get that sorted before doing the tire width change....anyway, back to the topic.

By running the 255/40-13s, I will lower the car by about an inch, and have an extra inch of wheel well gap. I'm hoping that by having that extra inch and stiffer rates that I can avoid cutting up my fenders. I haven't considered running a staggered setup...yet. I'd rather not as I like to be able to rotate the tires.

Using 275/35-15s is another story all together. The wheel that I'd look to mount those on would be 949s 6UL 15x9. Since the overall diameter would essentially be the same as I run now, I would have no choice but to cut up the fenders. At this point in time, I'm going to try to avoid that.

Has anyone SEEN a Civic with these tire tire sizes? Better yet, anyone have pictures?

 

Not an EG, but an EF running 275's up front and 225's in back.




Another possibility that has been considered is running 275/35-15's in front and 13's (either 225 or 255) in back. So far it has not been pursued by us because it seems like it would look pretty darn goofy (and it doesn't address your goal of being able to rotate the tires).

One thing we have found is that we can make it the better part of a season on the rear tires (225's) and just buy a new pair before nationals. The fronts we go through about every 5 events (that's with at least 3 drivers), and on the Snot Rocket with flipping the tires on the rims, we can get nearly double that before reaching cord (we finally heat-cycled out a pair of 275's before cording them - well, actually the cords did appear as we decided the tires were dead - earlier this year).

 

These are the 275s, albeit with aftermarket fenders. You can hopefully get some idea of fitment here.











Sorry for the pics being ginormous, I can't access pic editing software here at work.

Also Snizz, what are you doing with the car? Autox? Trackdays?

 

With stiff enough springs the 255/13's will fit without fender modifications.

My tire budget is no different not rotating my tires then it would be if I were to rotate tires. With A6's, I get 45-50 runs out of a pair of fronts. If I were to rotate them, I'd get maybe 75-85 runs out of a set of 4. To get 150 runs I'd need 8 tires. Without rotating the tires, the rears easily last 150 runs and I'd need 3 pairs of fronts to get 150 runs. Same 8 tires, but I've got new rubber on the front more often.

 

Oh, and search for pics of Jinx Jordan's FSP Civic. You can find pics of it on both the 13's and 15's.

 

Ill hop on. Ive been told that a set of 15x8 6UL's w/ a 245/50 tire can be fitted on an EG Civic with only minor rolling and typical race camber. Any confirmation???

Anyone know where Tage found his fenders/front bumper?

 

13's will fit over Integra brakes?

 

I'm not familiar with all the different classing in AX. Could you describe this inboard suspension a bit more does it change the mounting points? Are lighter suspension pieces (but using stock mounting location) allowed?

 

Doubtful... The 245/50/15 Hoosiers are pretty huge. They are enormously wide and 25" tall.

They also deserve at least a 9" wheel, IMO.

 

Street Modified rules...pushrods and bellcranks utilizing the stock mounting points and moving the springs and dampers inboard (think multiplication and motorcycle suspension bits - lighter and very affordable).

 

Sort of - I remember a black integra in DSP wearing 13" Panasports, but I seem to recall being told that some minor milling of the calipers was required to make them fit.

 

IIRC MrHeelToe put 245/40 on a EK; though I believe Avon was the only one that made that size and from reviews on the Miata board(from Emelio) the tire wasn't all that great.

As for the inboard suspension setup to gain extra room; you'd still have to deal with the knuckle upright/UCA and the rear trailing arm.

 

There were at least three of them that were on this board. One was owned by RacerMike, another by WatkinsM3, and the last by RineRacing. All ran 13's over the stock brakes. A thread with some pics of RacerMike's car out in Topeka are in https://honda-tech.com/forums/showth...6#post18771396. RineRacing used the Lenso VPD's. No milling of the caliper was allowed back then (only slotted/drilled rotors and stainless lines, calipers could not be touched, BBKs were not allowed), and the GSR was on a separate line than the ITR as well. There were no ud/bd variations either. The 13x8.5 Panasports, the modular wheel IIRC, fit over the GSR brakes without modification.

Thread on the 13x8.5:
https://honda-tech.com/forums/road-racing-autocross-time-attack-19/spoke-hoosier-tom-about-getting-13x8-5-panasports-but-i-m-all-confused-now-854632/

Do some digging from that thread and you'll find a ton of info. Search on those 3 screen names and you'll get even more.

 

I don't see how this would be possible, as a 225/45 Hoosier is in there pretty snug with that wheel. If it did fit, it would be tight as hell and you'd need kinda tall ride height.

As for the fenders, I think they're Chargespeed ones. We had a thread on them a little bit ago, search here for "fenders". Not sure on the bumper, might just be a modified OEM one.

 

Hoosiers are stupid wide for their size though. A 225 Hoosier is over 9" wide.

 

For a typical low-torque Honda, I would think the gearing of a 245/50-15 would be detrimental (that's a relatively very tall tire) compared to a 225/45-13 (even an abnormally large 225 like the Hoosier A6). It may fit, but will it work well?

 

Is there a limit on how wide someone generally goes? Where do we start seeing diminishing returns?

 

^ ya. like not being able to get them up to operating temp in AX. Just one example to consider.

 

Does having such a large contact patch being to impede aerodynamics in road racing? Or is that a non-issue?

 

Sort of OT....where can you get fender flares for a good price? I have an EK, so the "Rodney" EG fenders are not an option. I'm going to need something that will fit 275/25/15 Hoosiers.

 

Depends on how much power you have and the track. Daytona in an ITB Civic, yeah, too wide of a tire will slow you down. NHMS in an ITR ITR? 275's aren't enough.

As for getting heat into the tires in an autocross situation, again, it depends on the car and the course. Put a 275 on the rear of an 1800lb CSP CRX and you probably won't get it up to temp. A 225 on the front of my DSP ITR is crispy after one run.

 

The 245 he mentioned is also a Hoosier though, so I'd think that would also be stupid wide.