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HaveBlue83
HaveBlue83 New Reader
3/18/15 11:22 a.m.

hello GRM :)

dilemma: Traction on my FWD fun car.

two tires available: -225/50r16, would use a 16x8 wheel, et 40, OR a -245/45r16, would use a 16x9, et10-0, flares (1.5"F, 2.0"R)

Issues: finding good 16x9 wheels......and HOW much more would a 245 be noticed overall with the extra work needed and increased weight? (it's not my DD, it's the #almostracecar)

annnnnd go!

Dusterbd13
Dusterbd13 SuperDork
3/18/15 11:54 a.m.

The 245 purely because flares.

trucke
trucke HalfDork
3/18/15 12:30 p.m.
Dusterbd13 wrote: The 245 purely because flares.

Now go find 16x9's.

HaveBlue83
HaveBlue83 New Reader
3/18/15 12:34 p.m.

i forgot to mention I already bought the $175 TE-27 flares to test out the offsets and clarences.......

I guess I will be looking for wheels for a 245/45r16 T1R toyo for street use LOL.

GameboyRMH
GameboyRMH GRM+ Memberand MegaDork
3/18/15 12:38 p.m.

What kind of car is this going on and what kind of events do you do with it? Tires can be "too wide" for track use - but in autocross wider is practically always faster.

Also 16 is a no-man's land of tire sizes, could you run 15" or 17" wheels?

HaveBlue83
HaveBlue83 New Reader
3/18/15 12:56 p.m.

I am on a 195/50r15x7 setup right now. right now I'm still improving it, but I would like to one day do SOLO/PHA hillclimb events, open track stuff.

the car is an old eagle summit, but it's turbo swapped and I don't get traction until 3rd gear right now (over 300hp to the wheels, 2200lbs). I would be OK with going bigger 15" tires but I dont see any fat tires for 15 anymore. I might be wrong tho. Toyo just released 245/45r16's for old porsches. there are TOND of 245/50r16 tires available as well. I fit up some 15x9 et0's and it had plenty of room for a tire and worked with the flares.

17" wheels could be done but I would need a thiiner sidewall and that sucks for backroads. like a 225/40r17. then i get big wheel disease

GameboyRMH
GameboyRMH GRM+ Memberand MegaDork
3/18/15 1:03 p.m.

I'm running 195/50/15 on 15x7 right now and I'm planning to go to 245/45/15 on 15x8, it's basically the same size but 1" wider. You could get a little more width by mounting this size to 15x8.5 wheels or even 15x9s.

Edit: Oh and if you want to keep your tire options open, 205/50/15s will fit to 15x8s and even 195/50/15s can be put on 15x8s with a hefty stretch.

HaveBlue83
HaveBlue83 New Reader
3/18/15 1:08 p.m.

may I ask where you are finding these tires? i see nothing much over a 205 in r15 anywhere.

16" provides me with tire options for road or track.

thanks for the feedback!

GameboyRMH
GameboyRMH GRM+ Memberand MegaDork
3/18/15 1:12 p.m.

Go to tirerack.com and shop tires by size, in that size all you'll find is EPS and R-compound tires, but among those there's a pretty good selection.

HaveBlue83
HaveBlue83 New Reader
3/18/15 1:16 p.m.

yes I see them....id rather run a street tire and make sure all is well before I go straight to $$$ comps. I guess I will have to stick to a 225/50 and no flares if I cannot find any 16x9 et20 wheels for under a grand and decent weights

GameboyRMH
GameboyRMH GRM+ Memberand MegaDork
3/18/15 1:23 p.m.

EPS are street tires...or you could run something in 205/50/15 and then just change tires when you go to R-comps in 245/45/15.

HaveBlue83
HaveBlue83 New Reader
3/18/15 1:26 p.m.

tire rack shows one hoosier in 245/45r15. I dont want to do big flares and then run 205's, would look hella wonky. I just need something in a race and street size. thats either the 225/50r16 or 245/45r16 that I see.

I'd have to get a setup like these 18lb 16x9 ebay junkers: http://www.ebay.com/itm/16-16x9-4x100-Performa-Wheels-HONDA-CIVIC-CRX-ACURA-INTEGRA-MIATA-BMW-E30-MR2/301560012528?_trksid=p2045573.c100033.m2042&_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D28797%26meid%3Df1f3954509ee48a48e4cda8ec2e2eaf2%26pid%3D100033%26rk%3D1%26rkt%3D4%26sd%3D301560012528

I know what u mean tho.

GameboyRMH
GameboyRMH GRM+ Memberand MegaDork
3/19/15 7:27 a.m.

D'oh just realized this morning that I said 245/45/15 when I meant 225/45/15, check out that size.

z31maniac
z31maniac UltimaDork
3/19/15 7:30 a.m.

I'd be looking for a 245/40/17, based purely on tire choice.

HaveBlue83
HaveBlue83 New Reader
3/19/15 11:11 a.m.
z31maniac wrote: I'd be looking for a 245/40/17, based purely on tire choice.

ACTUALLY....good call.....I was bitching about 17'S BECAUSE OF SIZE, and look what I found: a 245/45r16x9 and a 245/40r17x9 only differ in the wheel/sidewall size. overall both take up the exact amount of room inside the well.

Diameter 627.8mm 626.9mm Circumference 1972.3mm 1969.5mm Poke 104.3mm 104.3mm Inset 124.3mm 124.3mm

Vigo
Vigo PowerDork
3/20/15 10:08 p.m.

225/45/15s are going to be just as wide in real life as 245/45/16 toyo t1r's and 15x9 availability is WAY easier than 16x9s. Food for thought.

HaveBlue83
HaveBlue83 New Reader
3/22/15 2:45 p.m.
Vigo wrote: 225/45/15s are going to be just as wide in real life as 245/45/16 toyo t1r's and 15x9 availability is WAY easier than 16x9s. Food for thought.

There is zero availability of anything in a 15 tire over maybe a 205. Im ok with using 15-17" wheels. I am not ok with running R comps for street use or paying for them in general.

The only two.sizes I can even buy a normal tire in are as follows:

225/50r16 195/50r15 245/40r17 245/45r16

Other than that its race only.

If you know anywhere i can get a 15" tire in a 245/45 please let me know.

Vigo
Vigo PowerDork
3/22/15 10:28 p.m.

You CAN buy a 245mm wide 15, it's called a 225/45/15.

Go look, some of the 225/45/15s put MORE tread on the road on a 7.5" wheel, than the 245/45/16 T1R does on an 8" wheel.

225/45/15s are bigger than they sound. I'm trying to help you. Now if you don't want to deal with the tread life of the 225/45/15s which are all arguably 'almost race only', then yeah, i guess give up on 15s.

GameboyRMH
GameboyRMH GRM+ Memberand MegaDork
3/23/15 7:15 a.m.

^+1, look at that size, there are EPS tires and R-comps available in that size. EPS are high-performance tires but they're legal and practical on the street.

HaveBlue83
HaveBlue83 New Reader
3/23/15 12:17 p.m.

lol, you guys prolly think i am figting you and logic. i dont mean to come off like that.

i do appreciate the visual on the 245mm widths. i know siudewall and dia affect the width as well as the listed size.

I will see what I can get, but it might be too exxxxxtreme for me, as a fun car anyways. for PA hillclimb tho......that different :) EDIT: 225/45r15 BFG Rival S and R-S3 look decent....$120-140 a tire...thats actually not that bad for what I need...and they will be like the azenis I used way back on treadwear...200rating. I hear ya. i do.

HaveBlue83
HaveBlue83 New Reader
3/25/15 8:56 a.m.

screen shots

Lookie what i found......

245/40r17 on rotas....with spacers and flares. Prolly is an 17x9. Looks awesome and just what i want.

Adrian_Thompson
Adrian_Thompson UltimaDork
3/25/15 9:12 a.m.

Why go to 9" width for the 245's? I just pulled up a few on TireRack, and all the ones I looked at said 7.5-9" width and all the measurements were quoted on an 8" rim. why not get the 16x8's and run the 245?

GameboyRMH
GameboyRMH GRM+ Memberand MegaDork
3/25/15 9:31 a.m.

245 on an 8" wide wheel is a bit of a squeeze, even a 225 wide tire could benefit from more than 8" of width.

9" is a good width for that size, I wouldn't run under 8.5" with a 245 wide tire.

CGLockRacer
CGLockRacer GRM+ Memberand SuperDork
3/25/15 9:36 a.m.

I run 245/40 18s on my RX8 and they are a perfect fit on 18x8 wheels. The sidewalls are just a bit proud of the rim face and offer a bit of protection. 225/40 19 that were stock looked stretched a bit.

GameboyRMH
GameboyRMH GRM+ Memberand MegaDork
3/25/15 9:58 a.m.

From the pics I'm seeing, it looks like 245/40/17 on 17x9 is just a slight stretch:

It's the maximum recommended width after all.

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