Newbie question on new tire setup

xbigb4ller69z

275/35R/19 in the front? and 305/30R19 XL in the rear? how would the car be balanced?

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Eibach pro kit/ Stillen sway bars / SPC rear camber arms / F.I. 12" CBE / GTM TT / Southbend clutch stg 3 / ProSport Gauges/ ZSpeed Performance Heavy Duty Concentric Slave Cylinder / Twin Oil Coolers. / Tuned by HP Logic

ChrisSlicks

I've run this setup on the stock sports rims for well over a year and the handling has been great. Street, auto-x and some track driving has been done on this setup. On the rims you are looking at you have an extra 1/2 inch of width so the fitment should be perfect. This information is based on the RE-11 which has a very stiff outer sidewall, your results may vary with a different tire.

I would generally discourage creating a large width differential front to rear as that will throw off the car's natural handling balance.

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Hotchkis ARB | Stillen CAI | Art Pipes | Berk CBE | Stillen AP Racing Brakes | AE Performance Oil Cooler | BC Racing ER Coilovers | Doran Control Arms

xbigb4ller69z

so is 255 / 305 rear combo the best setup for performance/looks ? I have stillen sways right now. I just want to make sure I'm not losing any performane...

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Eibach pro kit/ Stillen sway bars / SPC rear camber arms / F.I. 12" CBE / GTM TT / Southbend clutch stg 3 / ProSport Gauges/ ZSpeed Performance Heavy Duty Concentric Slave Cylinder / Twin Oil Coolers. / Tuned by HP Logic

ChrisSlicks

A 50mm width differential is too much in my personal opinion, you will invite unwanted understeer.

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Hotchkis ARB | Stillen CAI | Art Pipes | Berk CBE | Stillen AP Racing Brakes | AE Performance Oil Cooler | BC Racing ER Coilovers | Doran Control Arms

christian370z

Not ideal, like Chris said you will get a lot of understeer so unless you want your car to push through turns instead of remaining balanced, you should go 275/305 or 265/295.

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-320whp / 259wftlbs-
SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob

Guard Dad

Wider front tires can sometimes reduce steering precision. How did the 275/35's on the front affect the steering? The 265/295 or 275/305 sizing appeals to my "Bigger is Better" nature so I am eager to hear your feedback.

ChrisSlicks

I think the results may vary by tire, but with the RE-11's the steering is very precise. I was able to consistently win at our local auto-x events in the unlimited street tire class. With a softer sidewall tire I would have some concern of tire roll causing numbness, but it just hasn't happened with this tire. My tire guy hates them though, he always has a battle getting it onto the rim.

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Hotchkis ARB | Stillen CAI | Art Pipes | Berk CBE | Stillen AP Racing Brakes | AE Performance Oil Cooler | BC Racing ER Coilovers | Doran Control Arms

ClemsonWill

I have the 265/305 setup on my TE37s. I will agree that they track considerably more than the stock tires on uneven payment. However they have serious grip. With the TT setup you are probably going to want as much grip in the rear as possible.

My tire guy told me the same thing.

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