IMO, the 20's look too big...definately the H2 look.

 

That's why I love this forum so much....they are mainly full of very sensible and considerate peeps. I'm afraid for the fact that when it goes nation wide we are going to get more "I'm better then you" comments on here then it'll turn into every other forum out there.

 

X2o/ Trick

 

now there is some Lip! :mrgreen:

 

o.k. that is cool dub box, i give you props, BUT, in your first post you were talking about the width and dimensions and talking about people keeping secrets on this stuff and not telling you how to do it, THEN you went way off the mark of telling the secret by complaining about the posters that don't believe you,

please tell us , if it is so easy to do, what the wheel and tire dimensions are so that we(typically me) can put dubs on our(mine) xb , you will allways be known as the first on scionlife on dubs! but don't let the haters get to you so much you forget the important things(me and my dubs)

like i said before i give you props, good job man
BTW how is the ride of that box?

 

<grin> There is no secret. In my first post I merely said that I put 20's on without major mods and only requiring minor adjustments. And that I had no pictures until the next day. Then came the nay sayers-and that's OK, the nay-sayers were that way before they ever purchased an XB. There are negative people everywhere.

And there will be negatives to this post too, I'm sure.

If one were to read all the posts from the very beginning to the end one would laugh. The story kept growing away from what I had said. With that said, let's continue here with what you asked about.

I/m sure that XB owners have figured out that from the outer edge of the (rear control arm for a lack of a better term) to the inside of the rear quarter panel is approx 8.75" to 9" wide. That's it, that's all you have to work with in order to keep the tire inside of the sheet metal and from rubbing either side of the tire. So I would say that anything wider that 7.5" to maybe 8" of rim would cause fitment problems. It;s like trying to get 10lbs of crap in an 8lb box. (Excuse the pun)
99.9 percent of all 20" wheels made are of the 8.5" category resulting in fitment problems. So, in order to install 20's on an XB common sense tells us that it must be 8" wide or less. That is no secret. The same logic is used when selecting tire sizes. I am of the understanding that the first number of the size on a tire's siidewall represents the width in milimeters of the tires casing measured sidewall to sidewall when properly inflated. I know from school that the conversion from milimeters to inches is 25.4 mm equals one inch.
Staying within the theory of the 8 lb box we won't be able to install a tire that is much wider than 9". Nine inches times 25.4 mm equals 228.6 mm. So, that means 235/35 tire won't work unless it sticks out. If the tire is short enough that can happen. However, height is also a factor here and it hampers the width considerably. In order to figure the height of a particular tire one needs to multiple the first series of number to the second series of numbers times 2 for the upper part of the sidewall and lower part of the sidewall and then divide it by 25.4 because the sizing is figured in milimeters as said earlier and then add the rim size of 20 or 19 or whatever size rim you are using.
Now that we are on the same page we know that we must use a 225 or narrower tire and around 8" rim or less and I would say probably not much more of 40 series aspect ratio tire or it will be too tall and hit the bottom of the cars front end spring mount.
So there it is common sense 101. no secrets no tricks
Hope that helps.

P.S. Oh how's the ride? For the most part the tires and rims don't qualify the ride factor. That comes from the suspension. I will let you know after I drop it 2 inches tomorrow. I had planned that earlier but the headlamp conversion took me longer than I thought..

 

thank you, i am not a rim guru(more of a engine, and interior experimental specialist, that means i have no idea what i am doing but i do it just the same) so that actually helped out a lot for me, so thanks for the detail.

i asked about the ride because i thought you DID lower it, sorry for that. please post the quality of the ride after you lower it. thanks

 

How about an offset? we know the size. I think the offset is very important on any rim purchase.

 

the rim offset is +42mm on my 20's

 

Offset? Hmmm... THat depends on what one is trying to achieve. Let me tell you the ground rules and then you can determine what result you may want. Measure a rim and determine the width. Divide that in half and that is zero offset.
Moving the mounting pad of the rim towards the front results in a positive offset and visa versa. Depending on how much it is moved results in a greater plus or minus offset. So one could go under the car and measure the opening of the wheel well and all of the obstructions to get the overall with of the rim and then mesaure to the front of the brake drum or rotor and figure the proper offset. Keep in mind that rim offsets are also measured in milimeters. 25.4mm equals 1 inch.
Got it? Good!

 

hey dubbx I think 1 inch will be enough to lower our rides. I think 2 inches might create a problem for 4 people to sit inside.






what do you think!!!

 

damn i love these rims

 

now after putting 20s ur gas mileage is really gunna go down :?

 

Why? shouldn't the revolutions per mile increase with a bigger OD tire and more than offset any rolling resistance caused by added mass? Europe!

 

Rubbing problem with four people inside? Naaa, how could it rub if you couldn't move. It think four people inside creates bigger problem than rubbing. LOL Think supercharger!! That's the trick!

 

props on the rims!!!

 

the more the tire has to travel the more gas its gunna waste
the heavier the rim is the more it has to struggle which its gunna need more power to move and its gunna waste gas

 

im still not exactly sure what the specs are on the tires your using but it seems like your speedometer is gonna be about 8% off

 

i think more closer to 10%-12% off

 

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


Doc