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What's the widest tire you've got on a non-z51 or Z51 while keeping either 19"s or 20"s(respectively) on the rear? What rim are you using? What offset (if any) are you using?
375s have been stuffed in but if you want full suspension travel and adjustability, i would not go wider than 305 (maaayyyybe 315) and I would also not use a lower offset than +79 on a 10 inch wheel (more offset with wider wheels).
the problem is there is not much room to push the wheel/tire out to the fender (in the rear) without risking contact. there is room to increase width by using higher offsets and pushing the wheel in, but this narrows the track width, which is a draw back on a road course (not a big deal on drag strip).
you can fit an 11 inch rim with 305s on a +80 or more offset (stock is +79) but much more than that is too much for me. a lot of aftermarket options out there right now stick out.
375s have been stuffed in but if you want full suspension travel and adjustability, i would not go wider than 305 (maaayyyybe 315) and I would also not use a lower offset than +79 on a 10 inch wheel (more offset with wider wheels).
the problem is there is not much room to push the wheel/tire out to the fender (in the rear) without risking contact. there is room to increase width by using higher offsets and pushing the wheel in, but this narrows the track width, which is a draw back on a road course (not a big deal on drag strip).
you can fit an 11 inch rim with 305s on a +80 or more offset (stock is +79) but much more than that is too much for me. a lot of aftermarket options out there right now stick out.
Thanks for the info! 305 is what I was thinking. I definitely want to maintain full suspension travel but need something I can up with a little better. Thanks again.
375s have been stuffed in but if you want full suspension travel and adjustability, i would not go wider than 305 (maaayyyybe 315) and I would also not use a lower offset than +79 on a 10 inch wheel (more offset with wider wheels).
the problem is there is not much room to push the wheel/tire out to the fender (in the rear) without risking contact. there is room to increase width by using higher offsets and pushing the wheel in, but this narrows the track width, which is a draw back on a road course (not a big deal on drag strip).
you can fit an 11 inch rim with 305s on a +80 or more offset (stock is +79) but much more than that is too much for me. a lot of aftermarket options out there right now stick out.
Particle man, thanks for the info again. Do you know if that +79 offset is for all the wheels or certain wheels (Z51 and so on)? I have a non Z51 with the 19x10" on the rear. If the wheel offset is say 50mm I can in theory push the offset with a 30mm spacer to get it to 80 correct? Sorry for all the questions I'm just trying to get schooled up.
Particle man, thanks for the info again. Do you know if that +79 offset is for all the wheels or certain wheels (Z51 and so on)? I have a non Z51 with the 19x10" on the rear. If the wheel offset is say 50mm I can in theory push the offset with a 30mm spacer to get it to 80 correct? Sorry for all the questions I'm just trying to get schooled up.
both Z51 and Base wheels are +79 (rear)
a spacer will push the wheels out further and reduce backspacing. what you want is more offset and the only way to get it is to produce the wheel that way.
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
I kept it simple on our shop car....1/2" wider wheel and 1" wider tire (265 front and 305 rear's)
Talking to Dave at Forgeline if you want to go really radical you can stuff a 305 under the front of the car and a 315/325 in the back. The only issues is that you will loose some travel with it, and the tires rub at full lock on the front but for those wanting an aggressive AutoX or road course setup, that is the most you can stuff under it.
I've done C7s with Forgelines on about everything already:
On stock 285 Z51 tires:
Michelin Supersport 305s which are as wide as the Toyo 315s
18s
Toyo 315s
Toyo 325s
Doing a set of Pirelli 325s right now for a set as well. It's all in the offset. I love the wider look of a 325! These will look like David from Forgeline's first 21s.
I kept it simple on our shop car....1/2" wider wheel and 1" wider tire (265 front and 305 rear's)
Talking to Dave at Forgeline if you want to go really radical you can stuff a 305 under the front of the car and a 315/325 in the back. The only issues is that you will loose some travel with it, and the tires rub at full lock on the front but for those wanting an aggressive AutoX or road course setup, that is the most you can stuff under it.
Our first C7 with the 265/305 combo
Anthony what wheel off sets are on the picture with the 265 305 combo please?
Im shopping for a set of track day wheels in 265 / 305 complete with tires and sensors for my Z51.
Would you please price me up with a set and let me know what the colour / finish options are?
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
Originally Posted by Bryan Wharton
Im shopping for a set of track day wheels in 265 / 305 complete with tires and sensors for my Z51.
Would you please price me up with a set and let me know what the colour / finish options are?
I even have a set mounted up with Pirelli slicks on it too finished in black.
I've done C7s with Forgelines on about everything already:
On stock 285 Z51 tires:
Michelin Supersport 305s which are as wide as the Toyo 315s
18s
Toyo 315s
Toyo 325s
Doing a set of Pirelli 325s right now for a set as well. It's all in the offset. I love the wider look of a 325! These will look like David from Forgeline's first 21s.
x12.5" rim with the right offset and remove the rear Z51 plastic brake scoops if you have them
Ben do you have a front / rear shot of the reddish C7 (looks like licence plate worksux) your heading is toyo 315. Wheels look like TSW Interlago's please?
I want to get a look at the offset gaurd clearance. Thanks
How wide can you go?
Please post some pics of what you have that won't get me pulled over 
