What tire size for the CRX seems to be the optimal size for Solo 2?

Currently, I am running in the SM2 class with 195/50-15 Potenza S-03's (still learning so not ready to move to a R compound tire yet). This is on an 88 CRX DX with Koni shocks and skunk 2 coilovers.

My clearance is fine but I am wondering if there is a better sized tire for the CRX that I should be running on that would still give me no problems with clearance.

 

depends on power and gearing for you...

if you're not making a ton of power, the typical CSP setup of 13 x 8.5 or 9" wide wheels with 225 hoosiers or 235 kumhos would be the way to go.

if you're running a lot more power, might want to look at, AT LEAST 14s, or upto 16s. (the 225 14" is wider than the 13 or 15, hence the suggestion)

 

Thanks for the info.

I am currently running the JDM B16A. With the added bolt ons I dyno'd at about 160 whp.

To prevent rubbing would the 14 x 8 with a 42 offset, on 225/45-14 be ok?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rincon &raquo;</TD></TR><TR><TD CLASS="quote">To prevent rubbing would the 14 x 8 with a 42 offset, on 225/45-14 be ok?</TD></TR></TABLE>

If my math is right, those rim specs. would give you about a 5.65" backspace. So, you might have a problem rubbing the inner wheel well on tight turns or even touching the knuckle/upright with the sidewall just mounting the wheel to the car. You want to target a 4.75"-5.00" backspace (that's probably going to mean a rim offset or a spacer + rim that creates an total offset of 20-25mm). That will bring the wheel as far in as you can. But given that width, it will probably still stick out some. And you will probably rub on the fender lip if you haven't rolled it or your ride height is too low.


Modified by XrcR6 at 1:36 AM 11/4/2003

 

PseudoRealityX:

Actually, now that I think about it... what tire is available in 225-45-14? I've never seen an A3S03 or V700 in that size... Is the Toyo RA1 available in that size?... that one might not be able to get warmed up enough on a typical autox course unless its a warm/hot day.


Modified by XrcR6 at 1:46 AM 11/4/2003

 

225/50/14, no 45. It's a bit taller(~1"), but it's the widest 225 hoosier makes.

gearing could be brought down with FD or more powa'

Our local SM2 guy placed 5th at Nationals this year, using these 225 rears with a ~280rwhp supercharged Miata

 

I've measured it on my 89 CRX Si. You WILL hit suspension parts with more than 5" backspace, and 5" is pushing it depending on how much tire bulge you have. 4.75" would be optimal, if possible.

225/50/14 is the correct size for the CRX as compared to stock. Doesn't offer the gearing advantage of smaller tires, but it's not like it's bigger than stock.

 

I have 15 x 8.5 Kodiaks with 5.75" backspacing. I chose a deep backspace, so I could tune the fit with spacers. In the front, I use a 1/8" spacer, and have no rubbing of the uprights or suspension. I'm using 225/45-15 Hoosier A3S03.

In the rear, I'm using 1/4" spacers, and I trimmed the top of the trailing arm where the upper control arm attaches as well as the control arm itself. This was needed to allow the 5 1/2" backspace (5.75" less 1/4" spacer). The tire either just barely, or does not rub the trailing arm at the front. If it is rubbing, its not enough for me to notice. The tire shows no signs, and though the trailing arm is polished, this was due to rubbing before I sorted the fit.

Now the fenders were a whole nother story. It took copious amounts of "massaging" using a 2 lb sledge hammer for the tires to clear. It does not rub. Period. Unless I have a passenger. Then the right rear rubs slightly.

Now the car needs a trip to the body shop to make the "beautiful" job I did flaring the fenders presentable once again.













Modified by Jaker at 5:13 PM 11/4/2003

 

Good info. Definitely benefit by using the 15" wheels as far as clearance in the rear. I don't think you'd be able to trim enough to fit a 13" wheel with that backspace in there