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View Full Version : Rim/tire fitment question...


TurboB15sentra
12-14-2005, 02:02 AM
I've searched.. but can't find a definate answer to my question...

Will 275-35-18's mounted on 9.5" +35 offset wheels clear in in the rear of a S13 coupe? Also, will 235-40-18's on 7.5" + 38 offset wheels clear in the front?

Thanks for the help..

Travis

revat619
12-14-2005, 03:39 AM
1. 275 is way too big a tire for a 9.5
2. They wont clear without a significant pull.
3. 235 is way too big a tire for a 7.5
4. Those offsets are too high for our cars
5. Dont waste time with 7.5 in wide wheels.

What are your goals for your wheel/tire set up? Max grip, drift, daily driving, etc.

Rogerhinga
12-14-2005, 03:48 AM
wow thats some stagger.. i run 17x10 +25 in the rear with 235/45 and 17x9 +20 in the front with 235/45 also

those tires you're looking to put are way 2 big

Sil-Abc
12-14-2005, 06:59 AM
iuno they might work but ask kazuo he would kno cuz i have 245 on 16x8

KiDyNomiTe
12-14-2005, 07:13 AM
Search around, AceInHole had something absurd like 285s on mustang wheels with a pull and they fit, and I know someone asked something like this a while back and I posted a picture of someone on another forum i use with something like 275s on some sparco (the thin 5 spoke ones)

Ian
12-14-2005, 07:33 AM
yeah i remember seeing a picture of a guy running 275's all around i belive


My friend's S13 has 255's on it in the rear w/ a tiny pull and there's plenty of room on both sides (less then hetero wheel fitment)

TurboB15sentra
12-14-2005, 11:48 AM
http://img253.echo.cx/img253/3741/24031qi.jpg

There's a pic of the rims... Yes, I know they're cheap, so please don't lecture me on it... I just need to know what size rubber will fit/clear. I'm putting G-force Drag radials out back, and G-force TA's up front.. This is just a weekend toy..

Travis

S13FREEAAK
12-14-2005, 06:00 PM
275s fit fine on a 9.5 inch rim, they are only 10mm wider than the rim. That would work out perfect with a drag radial.

revat619
12-14-2005, 07:12 PM
275s fit fine on a 9.5 inch rim, they are only 10mm wider than the rim. That would work out perfect with a DRAG radial.

exactly....

I didnt say it wouldnt fit. If mashing on the gas, going in a straight line over and over again, and running bulgy (sp?) tires is your thing, then by all means go for it. :ughd:

And before anybody gets their panties all up in a bunch, i'm not saying stretched is what he should do either. Why not run a 255/40 on the 9.5?

clean
12-14-2005, 07:42 PM
i have 225 on a 7.5 +22 up front and that's pretty much flush w/ just the camber of dropping it on coilovers. the rears won't fit w/o a pull , not just a roll.

sideview_180sx
12-14-2005, 09:46 PM
what sizes are mounted on there currently??

TurboB15sentra
12-15-2005, 02:15 AM
If mashing on the gas, going in a straight line over and over again, and running bulgy (sp?) tires is your thing, then by all means go for it. :ughd:

I enjoy drag racing... what of it? What is it with 240sx owners.. and the belief that EVERYONE must use thier car for drifting? I'm 25 years old, and I've been into drag racing since I was a kid.. It's what I enjoy.. so, why is that so wrong? My wife and kid love to come out and watch.. hell, my kid wants me to build her a junior dragster.

That's not to say that I don't enjoy road racing... I belong to SERCA.. and I'm very much into road racing/the technology behind it. It's just not what I plan to use this car for.. So.. if that bothers you.. I'm sorry.. It just gets annoying when 20 people knock me because I want to build a drag car, instead of a drift or road race/auto-x car.

Travis

Rogerhinga
12-15-2005, 02:42 AM
I enjoy drag racing... what of it? What is it with 240sx owners.. and the belief that EVERYONE must use thier car for drifting? I'm 25 years old, and I've been into drag racing since I was a kid.. It's what I enjoy.. so, why is that so wrong? My wife and kid love to come out and watch.. hell, my kid wants me to build her a junior dragster.

That's not to say that I don't enjoy road racing... I belong to SERCA.. and I'm very much into road racing/the technology behind it. It's just not what I plan to use this car for.. So.. if that bothers you.. I'm sorry.. It just gets annoying when 20 people knock me because I want to build a drag car, instead of a drift or road race/auto-x car.

Travis

my comment had nothing to do with drifting.. i was just worried about clearance.. i had to stretch my tire and roll the fenders.. to get them to fit.. also had to raise the car up alittle.. i run a 17x10 +25 with 235/45 and i had a hard time.. but i mean you are gonna run 35 so they might clear.. just could tell you from what i tried..

revat619
12-15-2005, 02:48 AM
My comment had nothing to do with drifting either. I dont care what you do with your car. If you enjoy drag racing, more power to you. I find it a bit boring, but you really enjoy it. To each his own. Everbody builds their cars differently. :bow:

If you have the power to warrant such a massive tire, then go for it. But fwiw, if your building the car for drag racing, i would suggest using a different wheel. The wheels on that car you posted arent exactly light. Thats going to be a lot of unecassary weight. Unless of course, you're pushing enough hp to where it doesnt matter. Honestly though, a grippy 255 is more than enough.

240shorty
12-15-2005, 08:50 AM
First off, the most important thing is obviously clearance as more width = more pull/roll.

But to say that the tire is too big for the wheel is false. Using Dunlop's web site as a reference: The design wheel width for a specific tire is approximately 70% of the section width for aspect ratio's of 50 to 80. For aspect ratios under 50, section width is specified as 85% of the section width.

Given that this size tire (275mm) on our cars has to be low profile, we would use the <50 ratio which means the wheel width for the design rim would be 85% of the section (tire) width.

275mm/25.4= 10.827 inches (tire width in inches)

10.827in. X (.85) = 9.2 inches (approximate)

So the design wheel using this simple formula should be 9 or 9.5 inches.

Or backwards,

Wheel width = 9.5 inches X 25.4 = 241.3mm

Tire width = 241.3mm / (.85) = 283.9 mm (which is obviously > 275mm)

Now, let's dispense with the remedial math. The sizes you can run are actually a range. Widening the wheel or running a smaller tire will straighten the sidewall some and can improve handling and some characteristics, while decreasing comfort and absorbtion properties. It will transfer more shock to the wheel and ultimately, you. It changes the flex point higher or lower than it's designed peak. Running tires at the design wheel size probably nets the closest possible ride to what the manufacturer intended. It may not be however, what's right for you.

Aesthetics would be a matter of opinion, but as for whether you can or cannot run that size wheel on that tire; I think it's been established that you can. Let's not try and make it sound like it's a dumb question, as it's not. Helpful suggestions are what the man needs. Long story short, I can't really answer your question without breaking out the tape measure and calculator; and it's snowing outside, so you'll have to trust these other jokers for that. j/k

Knowledge is power: http://www.dunloptires.com/care/widthRatio.html

Yuri
12-15-2005, 10:06 AM
I agree with Jay. The width is not really the issue here, it's that the profiles are too high for the width. The tires will physically fit, but you will probably have rubbing issues on the front, and the taller gearing that they give you will allow less acceleration for drag racing. If you are going to run 235/45 on a 7.5, you will have to flatten all of the seams in your fender wells, and relocate your wiring harness so you don't cut either the harness or the tires(judging by your ride height in the pic. with a taller height, you can easily clear). As for aesthetics, the offsets you have picked are way too high for my taste, but everyone's preferences are different. It's your car, so the final decision is always up to you, so I won't expect you to make fun of me if I do this to my car :D
http://i22.photobucket.com/albums/b321/Yurikaze/S13donk.jpg

240shorty
12-15-2005, 10:31 AM
^^^LOL, Now THAT right there's funny! I don't care who ya are...

upSLIDEdown
12-15-2005, 12:04 PM
I'm currently running those wheels (962's) on my S13. I have the 18x8.5 +35s up front with a 225/40 and the 18x9.5 +35s out back with a 245/40. I also have 10mm spacers all around making them effectively +25 all around. I am also running a good deal of camber to get them under the fenders (no more than -3 tho). There are pics of my car in all the wheel threads. Search for 4 lug wheels, master wheel guide, etc. and see what you think. With a 275 on there, you will definitely need a roll and pull. My fenders are rolled almost completely flat and I can barely fit a key between the tire/fender. It's perfect fitment for just a roll. Without the spacer, you will be 10mm further inside, but the tire is also 30mm wider and you will most likely be running 0 camber of close to it since you're dragging it. You will definitely need a pull to get them in there. Also, I'm on coilovers and I'm tucking tire, so it will also depend on how low you are. Like I said, check the wheel threads for pics of my car. Actually it would prolly be easier just to search for posts by me because it hasn't been long since I posted the pics, they should be right at the top of my post list. Hope this helps.

Bryan

TurboB15sentra
12-15-2005, 03:43 PM
My comment had nothing to do with drifting either. I dont care what you do with your car. If you enjoy drag racing, more power to you. I find it a bit boring, but you really enjoy it. To each his own. Everbody builds their cars differently. :bow:

If you have the power to warrant such a massive tire, then go for it. But fwiw, if your building the car for drag racing, i would suggest using a different wheel. The wheels on that car you posted arent exactly light. Thats going to be a lot of unecassary weight. Unless of course, you're pushing enough hp to where it doesnt matter. Honestly though, a grippy 255 is more than enough.


Sorry... I just get agravated with all the hype about drifting lately... I have been driving S13's for over 5 years.. I've owned 4 of them.. including my white, 661whp S13 hatch.. I think the S13 makes for a awesome drag chassis.. But, it works great for drifting/road racing as well.. which is really what it was designed for in the first place.

I am still undecided on my powertrain.. It'll be one of the 3 options..

1. VK45DE with adaptor and 350Z 6spd
2. VQ35 with all the bolt-on's and cams
3. RB20/RB25 with a 50 trim/T350 setup

At any rate.. I'll be around 300-350whp.. so, I'll need some good grip out back. If I can fit a 255 in there without having to pull, I'd be happy with that.

Travis

Sil Beer S13
12-15-2005, 03:47 PM
I ran 18x9.5 +12 in the rear with a 255/35/18 and i had to pull like a mofo.

Rogerhinga
12-15-2005, 09:12 PM
I ran 18x9.5 +12 in the rear with a 255/35/18 and i had to pull like a mofo.

this man knows what he is talking about...

TurboB15sentra
12-16-2005, 12:01 AM
I ran 18x9.5 +12 in the rear with a 255/35/18 and i had to pull like a mofo.


What about +35 in the rear? I don't plan on seriously tucking the tire or anything.. How hard is it to pull the fenders?

Travis

Sil Beer S13
12-16-2005, 02:42 AM
its not hard to pull just have a good heat gun and a little time.

a +35 is 23mm more towards the car thats almost and inch.

for that you will need a slight pull 1/2-3/4 inch pull depending on height and camber.

upSLIDEdown
12-17-2005, 10:29 AM
What about +35 in the rear? I don't plan on seriously tucking the tire or anything.. How hard is it to pull the fenders?

Travis

Did you even see my post? Also, a friend of mine has a 255/35 on a 9.5 and it looks more stretched than my 245/40 because it has a shorter sidewall. Like I said, check the wheel threads for a few pics of my car with the 18x9.5+25/245/40 combo.

Bryan