what size tires on turbo cars

Information on the naturally-aspirated KA24E and KA24DE engines.
BONES S13
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i was interested in knowing what size tires you all are running in the rear? i'm planning on going with 16x8 wheel with 245/ 50 for a bigger foot print. i've seen people at the track with decent power but running 205mm tires and they just fry those tires.


andrave
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I run 205's, but I think I'm gonna get 195's cause my wheels are only 7".I have a spare set I might get some wider drag radials mounted if I start going to the track a lot.or I might get some **** tired mounted if I start drifting.or bothor niether.whatever.

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C-Kwik
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I run a 255 wide tire. I've used 255/40-17's in the past. My last rear set was a 245/45-17. My new set runs a 255/45-17 rear.

vadem
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Im rocking 235/30/19 up front, and 265/30/19s in the back. The traction, compared to the sixteens is amazing. On 7lbs, the 19's with not loose traction, if you dont drop the clutch. the 16s whip out at 20 by just pressing the gas.

andrave
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thats because the 19's have a lot more weigh and they have an increased rolling diameter.yuck. bling rims.

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C-Kwik
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It could be a lot of factors. I'd venture to guess the 16 inch wheels sported narrower tires and perhaps even a tire that has less traction. The rolling diameter of the 265/30-19 is not highly significant. My current rear tire and my last rear tire are both taller than his current tire.

vadem
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andrave wrote:thats because the 19's have a lot more weigh and they have an increased rolling diameter.yuck. bling rims.
Hey man the girlies dig them.

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red240ne
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On my stock 16's, I have 225/50 tires.

andrave
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I'm engaged.. thank god the ring was cheaper than 19" inch rims and tires.lolmy 15's cost me around 200 to reshod with decent tires. I'd even switch to work or hirsho 14's to save money on tires if I could. besides they look good. 14x6.5 +10 or 0

Structure240sx
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i've got 255/40/17 in the back right now. ran 235's for a week and they held nice off 9psi. now at 12-14psi the 255's start to loose it a little in 1st and second. im prolly going to go with the same size or maybe a 45 series jsut with a better tire ocne these wear out. im on kumho mx now. i think a good tire in a 235 or 245 is jsut right

andrave
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keep in mind it depends on what you want to do.. if you drag race you will want a smaller rim (so you can use drag radials with a decent sidewall on them) in as wide as you can fit in the back...if you autocross you will probably want the same tire all around, something sticky, shorter sidewall, with good breakaway characteristics. 8" wide all around would probably be a good choice.if you drift you'll need like 2 sets of rims anyway, smaller the cheaper it'll be to get tires, 15x7 is a good choice.and if its a show car just order some big 4" lip 19x9 19x8 staggered volks. otherwise there is no reason to go to an 18 or 19 inch size, just slowing you down...

Structure240sx
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for all around i would say a 16" wheels will do u good. in my case all aroung for me is 17" sincei do have a little bit of show to my car, was in my first car show last week and won a trophy,haha

Nathan
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A wider tire will NOT necessarily get you a larger contact patch, the tread compound is much more important. I'm not going to explain any more, a good look around the wheel/tire forum should explain it much better than I feel like.

Structure240sx
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^ true, but it has been said in those same thread that a wider tire with the same height CAN give you better traction for launching, pretty sure thats what i read

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WDRacing
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255/50/16 BFG Drag Radials...love those tires.

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Red-KAT
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in back 265-35-18's on my 18x10's

The rubber is stretched on a little...

Once I get my wide fenders I will drop on some 295+

These Dunlop tires that I have suck tho...

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huguetpj
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195/60-15 all around... and an open diff = BURNING RUBBER :pface

ADAMHU
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i have 245's , and they spin very easy in the first 3 gears..even on R compund

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red240ne
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WDRacing wrote:255/50/16 BFG Drag Radials...love those tires.


are those on the stock s14 SE wheels??

curt

Structure240sx
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^you can run those on stock s14 se wheels, which is probably what ill be doing sometime in the future

update about my comments on my tires. today i dropped it into 2nd at prolly about 30mph and nailed it. my back end kicked out pretty nice. this is on about 12psi from my kat and on my 255 kumho mx's with stock vlsd. i know there are stickier tires out there. im just going to wait til i wear these out tho. they are very decent for the money.

BONES S13
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Structure240sx wrote:^update about my comments on my tires. today i dropped it into 2nd at prolly about 30mph and nailed it. my back end kicked out pretty nice. this is on about 12psi from my kat and on my 255 kumho mx's with stock vlsd. i know there are stickier tires out there. im just going to wait til i wear these out tho. they are very decent for the money.


i don't want mine to kick out, but i didn't want to run drag radials either cuz i luv me some turns. i'll just have to play it by ear and see what happens. i wanted to keep a low profile with some 16ins with a wide tire so i can step off on people from a stop u know the sleeper look

Nathan
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I strongly suggest everyone read this thread, Contact Patch:http://www.nissaninfiniticlub....61953

An important excerpt: Q45tech states that ""One of the most common swaps is to change the standard tyres for ones with a lower profile and wider section. However, a tyre swap like this will change the shape of the contact patch of the tyre on the road. Changing to the wider tyre will give a contact patch that is shorter fore/aft, but is wider. The change in width is easy to understand - a 225 tyre is nominally 20mm wider than a 205 so of course the contact patch is wider - but what about the contact patch shortening in the fore/aft direction? This occurs because - despite widespread belief to the contrary - only the internal air pressure and the weight of the car acting through the wheel determine a tyre's contact patch area. Nothing else affects contact patch area- not tyre construction, nor tyre size! As a result, if the contact patch is wider, the patch must also be shorter, so that the same area is maintained."

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WDRacing
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red240ne wrote:are those on the stock s14 SE wheels??

curt


I'm running them on my R32 Skyline rims, but I'm pretty sure they are the same width.

Trppen37
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im using 225/55 rear and 215/55 up front..

Structure240sx
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having adjustable dampners also helps alot. i had my rear agx's set on 6 until today when i turned it to 3 and i got much better traction in all the gears

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Charlie240sxt
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What setting do you guys think AGXs should be at for a drag race I am about to head to the track for a few more runs and a race with my buddys 92 Rb20 auto HB 240 (only 2 more mods before turbo ka s13 cams and cluch job) with my s14 see how bad i can get my *** handed to me

Structure240sx
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prolly the softest in the rear would do best as long as you arent rubbing the tire i guess. i had mine down to 3 in the back and had hardly any traction problems. now they are on 5 and i can get some spin or wheel hop in 2nd usually not 3rd

andrave
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I dunno when I turn my AGX down low I get more wheel hop, it depends on what mods you have too I guess (I've heard subframe spacers and stiffer springs help) I have open diff, tein s tech, and kyb agx. and ****ty tires.

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huguetpj
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andrave wrote:I dunno when I turn my AGX down low I get more wheel hop, it depends on what mods you have too I guess (I've heard subframe spacers and stiffer springs help) I have open diff, tein s tech, and kyb agx. and ****ty tires.


So do I. The other day I had my left strut set at 8 and the right one at 2 (don't ask me why) and I had massive wheel hop off the line.

Structure240sx
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i have agx's, maxspeed springs, suspension techiques sways, whiteline subframe spacers, vlsd, and decent tires i hardly ever get any wheel hop. maybe if i try to do a burn out.


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