fender flares, etc to allow for wider tires?

[ricardofors68]

I don't see too many builds in which it fender extensions were included to allow for wider tires to be fitted in all 4 corners. Or I just haven't searched deep enough?

[rymerc]

How wide do you want to go? You can already fit 285s easily and that's about where the tire selections end. I think there's someone running 305 hoosiers, not sure what you have to gain by going over that other than increasingly expensive tires and adding weight.

[M43S7RO]

You could go the GT2 route:
https://gthaus.com/aerodynamic-parts...-m3-body-kits/

[itsnotq]

You could also go with the liberty walk kit, it's expensive. But you'd be able to fit some wide wheels.

http://libertywalk.co.jp/bodykit/lb-works/bmw-m3-e92/

[roastbeef]

There may be a diminishing benefit once you push the wheels out to go wider. You start to effect the scrub radius and leverage on suspension components if you don't actually widen the track width of the car. Something to think about.
I've often wondered about notching the frame up front to for larger tires, but I'm not serious about it yet, so I haven't taken a real look at it yet...

[ricardofors68]

So there is an end to how much is too much tire width size-wise

[roastbeef]

What is your goal size?

[ricardofors68]

My goal is to use as much tire width as possible

[okusa]

A gentle roll of the rear fenders is all you need to do. No fugly wide body pieces needed.

[1MOREMOD]

So you don't care if it improves your car or not just wider. Is this for Starbucks hard parker cred?

[Flying Ace]

All cars that park at Starbucks cars and coffee has liberty walk non-functional body kits and bags

[MasterP]

I fit 18X11 305 square under stock fenders.

The LB kits you need 12-13 inch wide rims and low offsets to fill up the wheel wells. You'll need some power to really benefit from the tire you'd put on a 12-13 inch wide rim.

[Richbot]

There's a big difference between "Say Unto Me What Fits, O Great And Powerful Internet" and "what will fit if I exercise at least more than one single solitary brain cell to conduct independent research and validation" and that's why there aren't many threads about flares

Originally Posted by MasterP

I fit 18X11 305 square under stock fenders.

The LB kits you need 12-13 inch wide rims and low offsets to fill up the wheel wells. You'll need some power to really benefit from the tire you'd put on a 12-13 inch wide rim.

Is that the Hoosier 305 radial slick? ET20-ish? How much camber did that take? My real-world experience with the 315/30-18 Hoosier A6 was "nope, not without a ton of camber" and they are just about identical dimensionally. I had no real adjustability back then to try it out more in depth, but at 1.5 degrees it was a hell no and that was on a narrow wheel. It also wanted to catch the fender liner at the back of the fender but not too bad, no worse than a 285/35-18. Would love to see a photo of that setup. The 315 would have needed a little bit of lock stop to stay off the frame too IIRC but I don't have my photos handy anymore

EDIT: Found my notes on here about that test-fit. Wheels are narrow because this was SCCA Stock class. 9.5 ET22.5 effective width/offset

One of the advantages of using the stock spring perch location is the great tire clearance, and the MCS dampers are a little smaller OD than the stock dampers so there's more room now. The 315's fit on the front with 18x9.5ET35 and 12.5mm spacers, but they stick out about 1/4" from the fenders. This *might* tuck in as the car rolls but I'm not going to find out. They also rub slightly on the back of the fender liner, but they fit, and don't rub at all in the front of the fender. So a little relieving of the fender liner with a heat gun or whatever, and more camber would probably make them fit comfortably, *without cutting the fenders ! This could be big in a more modified class as you can go pretty wide with the tires without making the car wider. You could even do this with coilovers with the right spring and perch...

So yeah. Agree flares are unnecessary. You can get a 295/30-18 Hoosier on the front of these cars very easily on a 10.5 with the offset selected appropriately, that tire fits comfortably in back too as does the 315 I was just talking about. You just can't go tall. Has to be a short tire up front

Also, these cars can run 17's with brakes selected appropriately, and Hoosier makes a 295/35-17 and 315/35-17 for the 'Vette and pony car guys and old P-cars. widening beyond the existing geometry much more than what MasteP is talking about up front just torpedoes the scrub radius anyway, even with the fancy knuckle you start to get out there in "better stop the suspension from working or it will work really poorly" land

[dparm]

Originally Posted by roastbeef

There may be a diminishing benefit once you push the wheels out to go wider. You start to effect the scrub radius and leverage on suspension components if you don't actually widen the track width of the car. Something to think about.
I've often wondered about notching the frame up front to for larger tires, but I'm not serious about it yet, so I haven't taken a real look at it yet...

This.

I wouldn't look at body modification for wider tires until you've basically proven that you are running out of tire. That's been my approach to almost any sort of upgrade or replacement part.

[ricardofors68]

Point well made and taken. Plenty of grip to be had without modifying the fenders. Thank you.