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Author Topic: Question on tires for street only  (Read 4163 times)
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04redracer
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Posts: 43


« on: February 18, 2014, 06:12:26 PM »

Ok so I have decided to finally bite and get the 6uls. Now my questions are which tire size would you go with for the street. I'm either leaning towards 225 rs3 or 205 re11. The car will never be tracked. Just a nice weather corner carver. Also, I have read that 15x8 is the preferred size but why doesn't anyone go with the 15x7.5 instead? Seems to be a nice in between size for either tire. Any opinions are helpful. Also I'm considering the bronze 6ul. Does anyone have any pics on the bronze wheels on a red msm? Thanks

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2003 mazda miata ls - sold 1/04/13
2004 msm gt - fm full intake, eBay dp, auto meter boost gauge, 5000 hids.
rotorglow
Toyotae non carborundum.
Fifth Gear
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Posts: 2699


« Reply #1 on: February 18, 2014, 06:55:31 PM »

I wouldn't run 225 on 7.5" wide rims. 

If you're thinking about 225-wide tires, 8" is really the minimum I'd go with.  That's nicely wide for 205, and though it's a little narrow for 225, it's workable, especially since you'll never do track or autocross. 
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2004 VR Sport: FM Big Enchilada w/ Hydra 2.7 + DeatschWerks 700cc injectors + FM crossflow rad + 3.63 rear gears + ES poly diff bushings + comp motor mounts--Koni Sports + Ground Control 550/375 + Racing Beat 1.125" bar + blocks & bolts--Wilwood/AX6 brakes--15x8 6ULs + RE-71Rs--Speedhut + Clearwaters + Auxmod + other misc electrics
millsj
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Posts: 2575



« Reply #2 on: February 18, 2014, 08:06:45 PM »

It's your lucky day with pictures.   Grin  This also shows the progression of the car over the last couple of years.   Shocked

















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FM full intake, FM DP and Exhaust, AFCO Shocks (550/400 lb springs), FM O2 Modifier, Hallman MBC with in-cabin controller, Stewart-Warner Boost Gauge, HDHCDD with Harness Bar, RB 1.125" Front Sway Bar, E-bay Delta Fin 27x7x2.5 FMIC, Ultra-Shield Rally Sport seats, Carbotech XP-12/10 pads, SS Brake Lines, PLX DM-100 Multi-Gauge, FM Crossflow Radiator, Spal Fans, FM Oil Cooler, custom in-dash oil pressure warning LEDS, i-Shift LED shift lights, 15x9 bronze 6UL track tires, COT NASCAR wing, DIY front splitter, fully ducted radiator.
bigx5murf
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Posts: 2458



« Reply #3 on: February 19, 2014, 12:15:28 AM »

As someone who's daily driven RS3 for almost 2 years.  Don't do it.  In fact don't daily drive any tire available in 225/45/15, there's only UHP summer tires and stickier in that size.  Go with a 205/50/15, much bigger selection, and more important much better selection of good wet/cold grip.  If you don't plan to autox/track, don't even look at 225/45/15 tires, even then having a separate street set is best.  My RS3 got pretty heat cycled out a bit after the 1 year mark.  The ultimate grip diminished significantly, still better than most tires in the dry.  But in the wet, I was drifting every turn.  In the cold, it happened too, but less predictably.  Not like they were great in the wet and cold before I put too many heat cycles on them either.  But the poor weather drop off in grip was very noticeable. 
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rstange1
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Posts: 637



« Reply #4 on: February 19, 2014, 02:55:23 AM »

^^ Agree with bigx. I really like my 205/50s for street use. Steering response and ride are much nicer than my 225/45s.
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'05 Ti MSM with: Flyin' Miata Downpipe, Midpipe, Exhaust | Hydra 2.7 ECU w/KO Racing tune | Deatschwerks 700cc Injectors | Turbosmart Manual Boost Controller | BEGi Cool Air Intake, Intercooler, Throttle Inlet | Forge Bypass Valve | FCM Elite Coilovers | Racing Beat 1.125" Tubular Front Sway Bar | Whiteline Endlinks | Enkei 15x8 PF01s | Hankook 225/45 R-S3s | Hard Dog HCHTDD Roll Bar | MiataRoadster Short Shift Kit | Audiovox Cruise Control | Sylfex AuxMod | VDO Boost Gauge | ScanGauge II | BlendMount | Cocomats
04redracer
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Posts: 43


« Reply #5 on: February 19, 2014, 12:42:47 PM »

Millsj - thanks so much for the pics...exactly what I was looking for.

Bigx5 - the car isn't a daily driver. I probably drive it once a week on my day off only on sunny days. Since you recommend 205s should I still go with the 8 inch wheel? What would be the difference between the 8 or the 7.5? Thanks
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2003 mazda miata ls - sold 1/04/13
2004 msm gt - fm full intake, eBay dp, auto meter boost gauge, 5000 hids.
rotorglow
Toyotae non carborundum.
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Posts: 2699


« Reply #6 on: February 19, 2014, 04:06:25 PM »

205s on 8" will be very slightly (and invisibly) stretched, so the sidewall will be a little stiffer, giving you slightly better steering response.  It's pretty nice for autocrossing, because you can go with lower tire pressures without the sidewall rolling over too much.

It doesn't sound like those are high priorities for you, so 7.5 would be fine: incrementally lighter (not in a way you'd notice, but still), and cheaper.

But again, if your goals changed, and you did ever want to step up to wider rubber, you wouldn't want 225s on 7.5" wide wheels.
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2004 VR Sport: FM Big Enchilada w/ Hydra 2.7 + DeatschWerks 700cc injectors + FM crossflow rad + 3.63 rear gears + ES poly diff bushings + comp motor mounts--Koni Sports + Ground Control 550/375 + Racing Beat 1.125" bar + blocks & bolts--Wilwood/AX6 brakes--15x8 6ULs + RE-71Rs--Speedhut + Clearwaters + Auxmod + other misc electrics
bigx5murf
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Posts: 2458



« Reply #7 on: February 20, 2014, 01:40:25 AM »

I still stand by recommending 205/50/15.  The car will feel more tossable, and ride better on the street. 225/45/15 will noticeably make the steering stiffer, and since they're all Ultra High Perf or race tires, the sidewalls will be extra stiff, making the ride stiffer.

15x8 would be the way to go, guarantee no rubbing of stock suspension components, and you can always try out the 225/45/15 in the future if you so choose.
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scotty b
They called you exotic. Which is people talk for awesome!
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Posts: 2445


Just another lost weekend, need another vacation.


« Reply #8 on: February 20, 2014, 03:15:28 AM »

I still stand by recommending 205/50/15.  The car will feel more tossable, and ride better on the street. 225/45/15 will noticeably make the steering stiffer, and since they're all Ultra High Perf or race tires, the sidewalls will be extra stiff, making the ride stiffer.

15x8 would be the way to go, guarantee no rubbing of stock suspension components, and you can always try out the 225/45/15 in the future if you so choose.

Probably won't be any worse than 205/40R17.
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'04 TiG, BEGI Re-flash; 450 cc injectors; FM IC; FM turbo back exhaust; BEGI intake; FM Oil cooler, Walbro 255HP, FM cross flow and Spal fans; GFB-BOV; MBC; Moroso air/oil separator; Nickel 6UL 15x8 with 225/45/15 BFG Rival S; V-Maxx Xxtreme; SSK; Wilwood 6 piston front, 4 piston rear brakes;  HDHCDD; Sparco Sprint V seats; Simpson 6-pt harness system; A-pillar dual-pod with boost and oil temp gauges, #3838

2006 C230 Sport, 2.5L V6, 6spd MT.  My favorite daily driver ever (so far).

Used to own:  '04 TiG, Big Enchilada, FM brake upgrade, Autometer boost gauge, Motegi Traklites, #2082.

My mind is a swirling miasma of scintillating thoughts and turgid ideas.
04redracer
First Gear
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Posts: 43


« Reply #9 on: February 20, 2014, 04:46:12 PM »

Ok other than being able to run 225s, is there any other difference between the 7.5 and the 8inch wheel if I go with 205s? I'm really leaning towards 205s now since the car is only a street car no track and I would like the ride to be a little better. Will running good tires in the 205 still net me better performance over the stock wheels?
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2003 mazda miata ls - sold 1/04/13
2004 msm gt - fm full intake, eBay dp, auto meter boost gauge, 5000 hids.
rotorglow
Toyotae non carborundum.
Fifth Gear
*****
Posts: 2699


« Reply #10 on: February 20, 2014, 05:25:32 PM »

Like I said above, the other differences between 7.5 and 8 are maybe cost (which you might notice) and weight (which you probably won't, given your use).
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2004 VR Sport: FM Big Enchilada w/ Hydra 2.7 + DeatschWerks 700cc injectors + FM crossflow rad + 3.63 rear gears + ES poly diff bushings + comp motor mounts--Koni Sports + Ground Control 550/375 + Racing Beat 1.125" bar + blocks & bolts--Wilwood/AX6 brakes--15x8 6ULs + RE-71Rs--Speedhut + Clearwaters + Auxmod + other misc electrics
bigx5murf
Fifth Gear
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Posts: 2458



« Reply #11 on: February 20, 2014, 06:50:52 PM »

Ok other than being able to run 225s, is there any other difference between the 7.5 and the 8inch wheel if I go with 205s? I'm really leaning towards 205s now since the car is only a street car no track and I would like the ride to be a little better. Will running good tires in the 205 still net me better performance over the stock wheels?

What do you mean by performance?  The lighter wheel/tire combo will make the car feel more tossable, and you might feel a small improvement in acceleration (although the stop watch won't show this).  It will ride better than stock.  Whether or not it'll grip better completely depends on the tire you choose.
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