19" rims on boxster
 

hi, ive never posted but have a question i need answered, I want to upgrade to 19" rims but i need to know what will fit... the rims/tires i have available are 315/25/19 rear and 245/30/19.... i realize the rear tires are huge but will they fit with spacers i think the fronts should be close but probably fit. any help would be super. id love to put these rims on my car so if spacers will do the job i just need to know how big.. thanks

depends on the offset... 315 is huge.. HUGE 245 up front shouldn't be a problem.. i've got 235 18's and nothing is close...

I just bought some 19"'s in boxster offsets 8.5" front 55mm and 10" rear 42mm and plan on putting on 255/30/19's in front and 265 or 275/30/19's on the rear. This should cure all understeer issues and still give me plenty of traction for the 3.6 or 3.8L X51 engine i plan on putting in the car.

I am not sure why more people arent onto the wider front tire bandwagon. With an 8.5" wide front wheel i would think you would want more meat then the 225 or 235 would provide. This should give you a nice balance.

315 25 19 From experience..
 

Hi all,

I had 19" Hre wheels that were 11" wide built for a wide body Carrera 4. After selling car, I shipped to HRE for 3" outer lip replacement down from 4". When the wheels were 11" inches wide they had 315 25s and for kicks i put then on the car. the wheel and tire stuck out about an inch. No good.

Now that the wheels are 10 wide (rear) I have 275 30s and fit tight. When i say tight i mean, i dont know if any offset will make a difference. the tire is 1/2" to the fender and the inner part of tire is about 1/4" from shock tower.

the wheels with 4" lips (ebay) that fit narrow body porsches are the exception because they have a thinner center (where the bolts go) that compensates for the 4" outer lip.

of course my car is dropped with h & R springs half inch in rear and one inch on front. (actual measurements) maybe cause the original 1998 springs were going flat.

things to consider:

Vehicle height

wheel kind

Offsets

Tire size

Now I have 235 35 19s in front and when I turn wheels all the way to one side it clears the inner fenders by <1/4 quarter inch. I heard of running 245s maybe if the car is not dropped.

Last note:

I think you should stick to the recommended 235 35s and275 30s, I dont see how spacers are going to help by pushing the wheel outward and sticking out of the the fender. Yikes!


RyanP. I think if you leave car stock height youll get away with 255s in front but not if you lower the car.

Sorry about the grammer, just trying to help but I'm in a rush.

see ya.

I have 19s on my 99. And have been for over 2 years.
Running 245 and 285 with no problems the car is also lowered...allot.

I don't see how you're going to fit 315s in the rear, especially if they are most likely 11" wheels. There have been a number of posts on the topic and the conclusion was it probably can't be done. I have 18x10s with 275s and H&R sport springs; I'm just about maxed out. 315s would be 1.58" wider? I don't think you want them sticking out beyound the fender lip with the car raised up to accomodate their 12.5" width.

yeah mine is lowered and with 275, i dont see how u can go that wide without doing some mods to the 1/4 panels or something else...

good luck