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S Chassis Technical discussion related to the S Chassis such as the S12, S13, S14, and S15.


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Old 03-09-2008, 12:43 PM   #1
Rezlo
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s14 Drag rims on S14 with no modifications to fenders?

Hi guys, I tried to search but could not find the info I needed,

I want to know what 15" rims (width and offset) you guys use for drag usage that fit the S14 without needing to change anything?

Thanks so much
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Old 03-10-2008, 06:06 AM   #2
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you can fit any 15" on an S14 with out trying. what size tires do you want to run?
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Old 03-10-2008, 07:07 AM   #3
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I would like to run some 26X10 X15's as they are quite easy to get here in SA,

Just worried about rim width, I presume 10" would be the best size to use for a slick like this right?

Still a bit worried that 26X10 X15 might be a bit small, ive been running 275/50/17 street ET's and I really battle for traction,

Another option is 29X11.5X15 or 29.5X13.5X15, I kind of want to get this right 1st time because the tires cost about $400ea here, dont want to get somthign that doesnt fit,

BTW im running 600whp RB25 in my S14,

What you think?


Thanks

Last edited by Rezlo; 03-10-2008 at 07:34 AM..
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Old 03-10-2008, 10:35 AM   #4
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just convert the inches to mm the 11.5 is your with of tire for ex. your 275mm tire really is 10.8 inches wide hope this helps you
so your 29x11.5x15 would be 292mms and the 29.5x13.5x15 would be 343 mm tire
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Old 03-10-2008, 11:02 AM   #5
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Yeah, I know the conversion, just wondering what you guys fit that doesnt require modification?

Cheers
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Old 03-10-2008, 06:17 PM   #6
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the rear has quite a bit of room inside for big tires. since you're going for a functional drag setup, you should run a pretty high offset, lke 15x10 +40 or something like that. check the max rubber thread and use a calculator to compare it with your old tires.

you'll loose a bit of gearing with the smaller tires, but with the better compound and tire construction you might be ok. some of the guys on ka-t.org are really into drag racing. they can probably help you choose a size better than i could.

note for those reading, according to MT's website, the "10" is the rim width. the cross section is 11.6 in this case. the 26x10x15 is roughly equivilant to a 295/47/15.
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Old 03-10-2008, 07:06 PM   #7
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The problem is how low of an offset before suspension clearance becomes an issue. Zilvia is all about flushness so this is something that very few people have tackled.
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Old 03-10-2008, 07:36 PM   #8
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MT ET Street Radial 2756015 (28x11.515) on a 15x9 wheel

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Old 03-11-2008, 02:42 AM   #9
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Looks good, I see youve trimmed and flaired your fenders a little, how much space have you got on the inside and what offset you using? any chance of a slightly smaller offset to keep the stock fenders? also did it effect your gearing quite a bit using the 28"?

Sorry for all the questions, new to trying to fit slicks onto a fendered car.

Thanks
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Old 03-11-2008, 03:23 AM   #10
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Not my car, It's Ivan from AMS, but IIRC

It's a completely stock fender, maybe with a slight roll

and 28" is 3.3" (12.5%) taller then stock
so 60 on the speedo w/ a 28" tire will actually be ~67.5mph
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Old 03-11-2008, 06:34 AM   #11
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i'm bored, here's some good stuff from ka-t.org

http://www.ka-t.org/forums/viewtopic...er=asc&start=0
http://www.ka-t.org/forums/viewtopic...highlight=tire

Quote:
Originally Posted by 9sec240 (Ivan)
I run an 9" rear wheel with a 7" BS with the 28 x 11.5 15 MT DRs... This BS on the 9" wide wheel is perfect for an S14.... My HKS Hyper II Drag coil overs are cranked all the way up in the rear for as much tire clearance as possible and my fenders are slightly pulled in the rear.. I have also spent a bit of time with a hammer rolling the fender lips and massaging other areas out of the way... I also had to trim my lower control arms slightly for some tire clearance... I still have some minor rubbing issues that will be solved soon....
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Old 03-13-2008, 08:59 AM   #12
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i tried a 29x11.5 on my s14, without a pull of the fender it isnt going to fit.
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Old 03-13-2008, 11:21 AM   #13
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I went with some M/T 26X10.5X15 Street ET's (bias not radial) and some spinwerkes 15X8 with 5 7/8 back space (wanted 5.5 but they didnt have)

Should be a whole bunch better than it was!!! and should clear no problems
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Old 03-20-2008, 02:20 PM   #14
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What I landed up with.

15X8 spinwerkes

26X10.5X15 ET Streets
Attached Images
File Type: jpg rims.JPG (48.0 KB, 60 views)
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Old 03-21-2008, 06:44 AM   #15
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enough of that, mount 'em up.
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Old 03-21-2008, 10:50 AM   #16
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I will soon enough, just got the car up on stands at the moment doing the 350z 13" track disk/rotor swap, and im busy building the RB25, after a full year of mid 11's it was time for a rebuild!!! this year i hope to dip into the high 10's
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