question about lowering and tire size (Full Version)

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question about lowering and tire size

  

kahnvict850 -> question about lowering and tire size (4/23/2008 2:07:25 PM)

ok so i've got a 96 lx 2.2 non vtec , stock suspension currently, however i am getting a nice set of drop zone coilovers from wheelbroker, i plan on lowering around 1.5 in , or to get rid of the wheel gap, i have 17x7 motegi mr7's currently, just wondering what tire size i should have on this, with the drop so not to rub, maybe some of you have 17's and have dropped maybe i can get what tire size you guys are running, i plan on keeping the 17's not going any smaller or bigger, currently have 205/40/17's , but they are so thin, i was hoping to go with a bigger tire, what do you guys think?????

  
falkore24 -> RE: question about lowering and tire size (4/23/2008 2:38:12 PM)

7" width is good for 205 or 215.  225 is pushing it.  Offset is the most important thing in fittment .... should be around 40-48.  In the wheels and tires sticky, I posted a few links to tools to compare old and new tire sizes and rims.

kahnvict850 -> RE: question about lowering and tire size (4/23/2008 2:46:53 PM)

i'm told the offset is +40

falkore24 -> RE: question about lowering and tire size (4/23/2008 2:51:38 PM)

I think accords use +45 for all of the stock rims.  plug the #'s into the calculator and see how it affects the wheel placement.  Then after you drop the car with the coilovers, see if you have the space where you need it.

kahnvict850 -> RE: question about lowering and tire size (4/23/2008 3:10:28 PM)

ok so i did some research, i found out my stock rims were 15x5 1/2 with a 50mm offset , when i plug that into the calculator along with my new 17x7 40mm offset  it says inner clearance  THE SAME    outer position    THE SAME   so what does this mean?

finch13 -> RE: question about lowering and tire size (4/23/2008 3:11:52 PM)

My rims are +42 and they stick out to the fenders, my steelies on the other hand sink in a lot, I wouldn't be surprised if the offset is around +35. I'm running 205/40R17. The best advice I can give you is to stick with a tire size as wide as the rim can hold and keep the rolling diameter as close as possible to stock as to not mess too much with suspension geometry and speedometer issues. If you want to rid yourself of wheel gap, lower your car more. It's cheaper too, the one time cost of suspension upgrades vs. buying bigger new tires for the rest of your ownership?


PS - This was my 1000th post. HOORAY FOR ME!

falkore24 -> RE: question about lowering and tire size (4/23/2008 3:12:54 PM)

check to make sure that you entered the #'s right.  A 5.5" rim will never have the same inner and outter clearances as a 7" rim.


EDIT:  I tried it with your #'s and got 9mm less inside clearance and the outside will extend 29mm further.

finch13 -> RE: question about lowering and tire size (4/23/2008 3:14:23 PM)

A correctly sized wheel will (usually) keep the inner clearance as close to stock as possible and, as you go wider, push the wheel out towards the fender.

kahnvict850 -> RE: question about lowering and tire size (4/23/2008 3:20:31 PM)

oh, i redid it, i had put in  5 1/2  not 5.5 , now i got the same as you inner  9mm less  and outer  extend 29mm  so what do those numbers mean?


EDIT, i  mean i understand i have 9mm less clearance inside and it goes 29mm more outside, but how does this help me to figure out what tires to run with a 1.5 in drop , to whole point is, i am sure i can achieve that drop with the 205/40/zr17s i have now, but i do not like them, they are to thin, when i hit a bump i could damage rim or tire or both, would like 215/50/zr17 but not sure if i can do that with the drop

falkore24 -> RE: question about lowering and tire size (4/23/2008 3:36:12 PM)

the inner lip of the rim will ride 9mm tighter on the inside.  At max turn, you need to see if it will rub on anything.  Also, the outter surface when going straight will be 29mm further out than the stock wheels .... see if that's ok too.

There are no hard fast rules for combining lowering and upsizing rims.  There are just too many variables.  In general, I think those rims will fit fine, but at full turn, they might rub a little, though to say for sure (I don't think so).  If that is the case, you lose a couple of degrees from your tightest turn that you can make .... not a big deal for most people.

finch13 -> RE: question about lowering and tire size (4/23/2008 3:36:21 PM)

I had a 1" drop on my 5th gen, 1.5" will look even better. I bent my rim in a pothole a few weeks ago, it definitely sucks, but I don't think such a small increase in size is going to protect you much better.

kahnvict850 -> RE: question about lowering and tire size (4/23/2008 3:42:17 PM)

so basically might as well just do the 1.5 in drop, keep the 205/40/zr17 and just becareful or go 215/50/zr17 and maybe lose a little turning radius, not to bad i guess, glad i didn't go 18's like i was thinking about, then my choices would be very little to none.  thanks guys

finch13 -> RE: question about lowering and tire size (4/23/2008 3:48:18 PM)

You'll have to even more careful pulling into parking spots. For some reason I always scraped the tow hook and not the lip... odd. Anyways, it was half worn down when I totaled it.

Also, you should upload some pics to your galley. I don't think I've ever seen a 5th gen in such an awesome blue.

kahnvict850 -> RE: question about lowering and tire size (4/23/2008 4:07:17 PM)

ok i made a gallery, my digital camera is on the fritz, but i had these already on my pc, keep in mind the car is dirty and i've done some more things to it since then, but i got some pics up, will put better ones once i either get a new camera or fix mine !

falkore24 -> RE: question about lowering and tire size (4/24/2008 7:09:16 AM)

For the tire size change, use the miata tool.  It will tell you how the overall height compares between the 2 tires and also with the stock setup.  It also tells you how much off your speedo is.  A 50 sidewall will give a descent amount of cushion over the 40's.

  

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