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[Kung Fu English]

When I get new summer wheels this year I will need new summer tires also. I was planning on getting some 19x10 F and 19x11 R or similar wheels probably Forgestar Superdeep concaves.

Looking at tire sizes. I want to keep close to stock ratios if possible.

I had thought 275 F 295 R would be ideal, however after checking the calculator I see 285 F and 305 R is closer to diameter size.

Is this setup even possible? I haven't seen many people run it, likely because 285/30s are hard to find or is it because they will rub? Is it even feasible?

[slicer]

275's are the maximum in the front. 305's are possible in the rear. Correct offsets will be key for the success of any of your planned sizes.

[Kung Fu English]

Originally Posted by slicer

275's are the maximum in the front. 305's are possible in the rear. Correct offsets will be key for the success of any of your planned sizes.

Ok thank you for the reply.

If I get 275/295 what width wheels would I need and what offsets if you know?

[slicer]

Originally Posted by Kung Fu English

Ok thank you for the reply.

If I get 275/295 what width wheels would I need and what offsets if you know?

What suspension are you running now and/or plan to run in the future? Specifically, are you running KW?

[Kung Fu English]

Originally Posted by slicer

What suspension are you running now and/or plan to run in the future? Specifically, are you running KW?

No just stock ZCP suspension and I don't plan to modify it.

[John ITRW]

to fit 275/295 an offset around +22 is ideal on a 9.5/10.5 wheel stagger, and im not sure about on 19s but on 18s 285/305 is totally doable, and why not have more tire if you can :-P

[slicer]

Originally Posted by Kung Fu English

If I get 275/295 what width wheels would I need and what offsets if you know?

Originally Posted by slicer

What suspension are you running now and/or plan to run in the future? Specifically, are you running KW?

Originally Posted by Kung Fu English

No just stock ZCP suspension and I don't plan to modify it.

19x10 and 19x11 with 275/295 tires and your suspension I would go with 19x10 et25 and 19x11 et30. If you think you may upgrade to KW coilovers and/or you are going to run around -2 degrees of camber in the front, then I would switch the front offset to et17.

[slicer]

Originally Posted by ARO6ANT

to fit 275/295 an offset around +22 is ideal on a 9.5/10.5 wheel stagger, and im not sure about on 19s but on 18s 285/305 is totally doable, and why not have more tire if you can :-P

22mm offset on a 9.5" wheel with 275's in the front will work with any suspension except for KW. KW's will require between et 19 and 17mm depending on the tire.

22mm offset on a 10.5" wheel with 295's in the rear will rub on the metal fender and camber can not fix the problem... Unless you are lucky and/or run a tire brand that runs narrower than most. 25 mm offset in the rear is the ticket to fit 295's without rubbing on 10.5's. I have tested both offsets with Yokohama AD08 tires. 295's fit with et25 and negative camber. I couldn't get the et22 to stop rubbing on big dips (rub was minor but it hits the painted part of the metal fender).

[John ITRW]

Originally Posted by slicer

22mm offset on a 9.5" wheel with 275's in the front will work with any suspension except for KW. KW's will require between et 19 and 17mm depending on the tire.

22mm offset on a 10.5" wheel with 295's in the rear will rub on the metal fender and camber can not fix the problem... Unless you are lucky and/or run a tire brand that runs narrower than most. 25 mm offset in the rear is the ticket to fit 295's without rubbing on 10.5's. I have tested both offsets with Yokohama AD08 tires. 295's fit with et25 and negative camber. I couldn't get the et22 to stop rubbing on big dips (rub was minor but it hits the painted part of the metal fender).

My rears only rubbed on the fender liner which didnt bother me and i was running pirelli pzeros which are a pretty square tire and i was pretty low on 19 inch volks that were +22, so if hes stock height i wouldnt worry, but it is a tight fit

[slicer]

Originally Posted by ARO6ANT

My rears only rubbed on the fender liner which didnt bother me and i was running pirelli pzeros which are a pretty square tire and i was pretty low on 19 inch volks that were +22, so if hes stock height i wouldnt worry, but it is a tight fit

You are one of the lucky ones

[Kung Fu English]

Ok to summarize: 275/295 19s

9.5/10.5 or 10/11 will work. Is one preferred over the other?

10/11: Et 25 front and et 30 rear. If you add camber you need et17 front. (Will et17 fit without camber? On the same vein - how hard is it to get to -2 camber and can most shops do it?)

9.5/10.5: et22 front and et25 rear

Should fit most tires.

[BMW Fanatik]

Originally Posted by Kung Fu English

10/11: Et 25 front and et 30 rear. If you add camber you need et17 front. (Will et17 fit without camber? On the same vein - how hard is it to get to -2 camber and can most shops do it?)

That was not related to camber, that was related to lowering on KW's since they come into connect with something in the inside if the offset isn't +17 or more aggressive aka +15 etc..

The camber would then have to be something like -2.0 otherwise your tire would rub on the fender. - depending on your style of driving, you will notice your tires wear quicker but if you're not being a bone headed fool then not a whole lot quicker!

[Kung Fu English]

Originally Posted by BMW Fanatik

That was not related to camber, that was related to lowering on KW's since they come into connect with something in the inside if the offset isn't +17 or more aggressive aka +15 etc..

The camber would then have to be something like -2.0 otherwise your tire would rub on the fender. - depending on your style of driving, you will notice your tires wear quicker but if you're not being a bone headed fool then not a whole lot quicker!

Oh don't get me wrong I love camber. I run about -3 F and -1.5 R on my STI with 0 toe and if you do it right theres no increased wear.

I'm not going to change the suspension in this car so I'd like something I can fit now and also that will fit when/if I do a camber alignment for more cambers. I have my STI for a car with a stiff suspension I don't need another :P

[Grail05]

im running 275 front 19x9.5 22 no issues

rear 305 19x11 33 definately no issues no rubbing. sits very flush even better with PS2's

[Kung Fu English]

Originally Posted by Sean05

im running 275 front 19x9.5 22 no issues

rear 305 19x11 33 definately no issues no rubbing. sits very flush even better with PS2's

Excellent.

Can I run 19x9.5 and 19x11 with the stock tires as well? I think I'd like to finish out the use on my stock Contis and put off replacing them for a year or so if possible. Will this offset work?

[demonglide]

I have 255/30/20 F
305/25/20 R
Works awesome an super stance from rear big ass buns. :-)