OEM Boss Fronts: 255 40 19 vs 265 40 19

http://www.discounttire.com/dtcs/infoTireMath.dos

Anyone try this yet?
a little wider and a little taller....

thoughts?

I'm wearing out on outside edges pretty fast...

 

Hasn't tried it, but I'm running 285/35/19 up front....no problems

 

"Haven't" tried it either !!

 

Do your comparison as 255x40x19 vs. 285x35x19 (rear) and then again with the 265x40x19.

The tire height is -.24 in the rear
The tire diameter is -.5 in the rear

I don't think that is enough to freak out the ABS or traction control... but something to think about.

 

on the 9" front rim?
wow
do you have any pictures?

 

That's exactly what I was wondering too.

 

No...not on the 9" inch rim...sorry....19X9.5 all the way around.

 

A buddy of mine is using Boss wheels on his GT and he's running Michelins in 265/40R19 front / 275/40R19 rear ... meaty!

 

I'm running Michelin PSS 265/35/19 and 295/30/19 on 302S wheels with no issues. What's your concern?

 

thanks fro posting
265-35-19 fit ok in front?
do you track the track?
Mind if I ask for a close up picture of the front tire?
.....if not too wide then?

thanks in advance

 

these are probably shorter than the stock tires.

I was thinking about trying 265/40/19 and 295/35/19

 

I like this idea, a little more tire width on front and back...

 

285s will fit up front with no issues I believe as well. I haven't seen him in awhile but a guy name Reverend ran 285/40R18's all the way on his 05-09 car with no issues using the same gen GT500 wheel.

As an example of what will fit dimensionally

 

Those weren't available when I purchased mine. For track use the lower profile might be better but who knows.

JPC photos are not necessary as the 265's have plenty of clearance and like others have stated the 285's fit with most wheel offsets. You'll need a front spacer to clear the strut with most tires that are wider than 285.

I do track my car but I have a set of Enkei PF01's in 9.5 an d10.5 widths with Hankook RS3's mounted with 265/35/18 and 285/35/18 tires. The Hankook's are a lot stickier than the stock Pirelli's. I'm probably going to try the PSS tires at the track just to see what they are like. I expect them to be similar to the Hankook's in dry performance. And more rubber is better on our heavy cars.

 

No issues rubbing on the brake ducts? I'm about ready to pull the trigger on the PSS but wasn't sure if the 265 would rub when parallel parking.

 

Tracking the Boss with Continental slicks - 285/18s in front and 305/18s in the rear with no concerns so you should have no issues!

 

No rubbing with my 265/35/19. Like Bill said you should be able to go to 285 with no issues.

 

Pic?

 

Go to action.zenfolio.com ( Rupert Berrington Action Photos ) and then go to new additions . Under 2013 NASA HPR TT there are a bunch of pictures of my car at speed at High Plains Raceway (pg 22 ) --- running on used Grand Am Continental slicks in the sizes I listed on Enkei rims. Car has the stock suspension, stock sway bars , with the only modifications of any note being MM camber plates, Girodisc two piece rotors, MGW short throw shift kit, Corsa axle back , Carbotech pads ( 24s in front , 10s in the rear ) and that is about it.

No rubbing of the tires and the grip is about the same as an R6 Hoosier ( Hoosier builds the slicks for Continental ).

 

295x40x18 Hoo-hoos. That's Bill behind me (per usual) on the 285s.

I'll be back on 305/650/18s (which are actually SMALLER than the 295 hoo-hoos) in 2 weeks... I think they fit better anyway.