Solomon

Can someone please tell me what is a somewhat standard size 17's for front and back with a staggered look? Maybe with 18's too? This has right now KONI's and I will be putting on some H&Rs to drop it just a little, not into slamming the car.
Thanks,
Britten

ptrhahn

iTrader: (9)

For a staggered setup, 8.5" front, 9.5" rear would be most common. 225-245 mm front, and 255-275 mm rear tires. These will be the same for 17-18" wheels.

If your car is conservatively modded, you might consider an 8.5-9" all around w/ 245-255 mm tires, so that you can rotate them.

Solomon

thanks, is the larger rear just for better traction or more for looks?

Mean Machine

a little of both i guess, there will definately be an increase in traction but it will also look really tight.
btw let us know how you like the koni/h&r setup thats what im thinkin of getting too

xchaos

I'm going with the stagered look. I have ordered the following size wheels:

Front - 9x17 43mm offset
Rear - 9.5x18 43mm offset

Tire sizes I am thinking will be 255/40 in front and 275/35 in rear. Guess I'll see how this works out!

Solomon

xchaos, why?

xchaos

I want the stagered look...and have almost 400 to the ground.

I wasn't looking to spend $400+ on wheels and found the FN01R-Cs (5Zigen) which are around $220 each and very light. I needed something wider than the 9 inch in the rear so went with the 18s to get the 9.5. I think it will look good...but we'll see how it handles.

Solomon

have you seen anyone else with this size? What about rolling fenders, or do you not have aftermarket springs/shocks or coilovers?

xchaos

I have GC coilovers/koni adjustables. My front is already rolled, but I don't think it would be necessary with this setup. Don't think the 2.5" springs are either...

I have never seen this setup. I have seen 255/17s on a 45mm offset all around and no problems. I have also seen 265/35/18s all the way around on 50mm offset...with no problems.

YMMV

ptrhahn

iTrader: (9)

Post pics of this setup when you ger it mounted... i'm very interested to see how the 17/18 combo with those size tires works out... you'd be the first i've heard of to try that setup.

Kieth

The 40/17 combo up front with the 35/18 in back would like kind of strange IMO.. I see Vette's with it all the time, but they run same series tire's all around to rake the car more. Why not just go 18's all the way around if you're gonna even it out w/ tire anyway?

xchaos

The rear will be about .5" taller with sidewalls about the same as the front. One reason I'm doing the taller in the back is I want to adjust my gear ratio taller. Visually, I doubt you would really be able to tell...and it will fill the rear well up more since the overall diameter is more. With the tire size different...the same series would be way to large in front unless I went much smaller.

If I don't like it...I'll down them to 17s later.

doncojones

Series is not a fixed scale, it is the sidewall height as represented by a percentage of the section width. The wider the tire for a given series, the thicker the sidewall.

C5 tire sizes are 245/45-17 F and 275/40-18 R. Since the rears are wider and a lower series, the sidewalls end up being the same height.

Solomon

humph, that is interesting

Kieth

So the width of the tire also effects the overall diameter of the tire, regardless of the series?

Solomon

This is the look I want. If I do not go with this style I would like to go with the OZ Crono's in 17's. I would love to have the widest tires I could all around to keep life good on them for the first year. I have the stock rims and some winter tires coming for the winters. I see no point to go with 700+ rims each just for a brand. Any ideas on what these are, like offset and size?

xchaos

Yes. Refer to this site for some sizing info. It is in the stickies above: http://www.miata.net/garage/tirecalc.html

My setup idea:

Front : 255/40/17s Diameter 25" Sidewall 4"
Rear : 275/35/18s Diameter 25.6" Sidewall 3.8"

FD's stock size is 225/50/16 making diameter about 24.9"

As you can see, my front is almost the stock size diameter. Just wider and my offset will push the wheel out some. I think it is going to be close up front. In the rear, which has more room, I'll be .6" taller and out a little more than stock. I think it will be ok in the back.

Solomon

any guess on the photo above, Size, offset, etc?

doncojones

Yes. The series is the sidewall height expressed as a percentage of section width.

With the stock FD tire size of 225/50-16 for example, 225 is the section width in millimeters, 50 is the series, and 16 is the diameter of the rim.

50% of 225 mm is 112.5 mm, or about 4.4 inches (25.4 mm = 1 inch).

A common upgrade is for people to run 245/45-16 tires on the stock wheels.

45% of 245 mm is 110.25 mm which is essentially the same as the stock sidewall height.

SpeedKing

iTrader: (4)

Brit,

those are Racing Hart C2s (they look nice but are heavy), in I'd guess an 18", offset - no idea, and I doubt that anyone can give you the exact offset just from a picture.

They are the same wheels that "fastrx7man" has for sale in the classifieds:

https://www.rx7club.com/showthread.p...hreadid=255206

Ask him about the specifics.

Solomon

thanks!