Knowing that DF 210's by Tanabe provide probably the most drastic drop, about 2.0 all around (I already have them installed on the box), what would the box's height be like with 15 inch wheels? Would it be even lower than with 17inch wheels? I have about 5 inches from my bumper to the ground right now, and about 4 from muffler to ground. If It was on 15inch wheels instead of 15, would these heights lower even more? i am beginning to consider bronze FN01R-C 15inch wheels for my next eventual mod, but i fear that I would have to upgrade springs to a less drastic drop as well. Any info is appreciated, and mods, please leave it as general xb and not wheels/tires etc.

Thanks

 

It all depends on the tire size you get. The rim size is sort of irrelevant to ride height.

Here's a link to a tire diameter calculator...
http://www.net-comber.com/tirecalc.html

 

Im jsut worried about the rear bumping being too close to the ground if i were to go with a smaller wheel/shorter tire.

 

this might dispell some of your concern.... here's my xB. it's dropped on goldlines(2 inches all around) it has 205/50/15 tires that are 3/4" shorter in overall diameter than stock:

 

ahh, very reassuring. Thank you.

 

not a problem. be sure to post some pics once all the pieces come together

 

To answer another part of your question, assuming the same profile on both tires, a 15 inch rim will ALWAYS be able to go lower on the same suspension than a 17 inch.

It's simple physics (as opposed to the complicated physics that work the VSC in our cars)

 

Hey, that looks nice. I've never considered using 15s on a lowered car - mine is stock height for now. I like the way the gap around the tire is maintained by using a smaller OD tire, but the speedometer difference and the higher revs for the same distance would probably deter me from doing the same thing. Good job, anyway.

 

Here are a couple of tire wheel height calculators. They can be handy. The first one compares two tires and you can see how the old rim and width vs the new. The second one allows up to 5 sizes to compare...be sure to click on Front and Side View Images. The resulting image has the correct tire diameter but the innner rim is not scaled correctly.

http://www.miata.net/garage/tirecalc.html

http://www.1010tires.com/TireSizeCal...?action=submit


Andy
http://www.piratesofhorsepower.com
http://www.cobralads.com

 

I did the exact thing my car is abotu 4.5 off the ground, it looks tight and mean as hell, but you have to worry bought speed bumps and pot holes. but it looks sweeeeeet.