[mjk3888]

Originally Posted by FNxR3DNECK

Regret what exactly? Putting the 305 GY on your stock 20x10s? Like Mike pointed out the RE71Rs in 305 are quite as wide so they shouldn't feel as "sloppy" or whatever on a 10" wide wheel.

If I was to stick with the stock 20s I would do what you are with a 295 square set up of RE71Rs, but I want to go down to 19s, mainly for the weight savings but also so I can get a little more tire up front. I would just do 285/35/19 front and 305/30/19 rear but that would have the fronts with a larger diameter than the rears which I don't want.

I understand the "Don't put a 305 on a 10" wheel" argument but I have seen PLENTY of people run it on other cars(specifically the RE71Rs), including 5th Gen 1LEs for Auto-X. These WILL NOT be track wheels/tires, only for Auto-X if that matters in your argument, I will probably only attend 1-2 track days a year so I plan to use the stock setup for those.

I do appreciate the different view points, just trying to figure out what will work best for me haha

Updated my other post but I added the 295/30 info below.

Our Goodyear Supercar 3's measure at (285/10.8" tread width) and (305/11.8" tread width).

305/30R19 RE-71R's measure at 11.1" tread width.
295/30R20 RE-71R's measuer at 10.7" tread width.

Yes you read that right! The 295 bridgestones are actually narrower than the OEM 285 Goodyears

[tx6g1le]

Originally Posted by FNxR3DNECK

Regret what exactly? Putting the 305 GY on your stock 20x10s? Like Mike pointed out the RE71Rs in 305 are quite as wide so they shouldn't feel as "sloppy" or whatever on a 10" wide wheel.

If I was to stick with the stock 20s I would do what you are with a 295 square set up of RE71Rs, but I want to go down to 19s, mainly for the weight savings but also so I can get a little more tire up front. I would just do 285/35/19 front and 305/30/19 rear but that would have the fronts with a larger diameter than the rears which I don't want.

I understand the "Don't put a 305 on a 10" wheel" argument but I have seen PLENTY of people run it on other cars(specifically the RE71Rs), including 5th Gen 1LEs for Auto-X. These WILL NOT be track wheels/tires, only for Auto-X if that matters in your argument, I will probably only attend 1-2 track days a year so I plan to use the stock setup for those.

I do appreciate the different view points, just trying to figure out what will work best for me haha

They were MPSS and they were too wide. I lost a second from the stock set up on my local track AND they weren't any better on AutoX handling either. Went with Sport Cup 2s this time with 295F and 305R with camber plates. Track day is Sunday so hopefully, I'll have some news to share.

I don't have any experience with the RE71s but I'm sure they're great as that's THE tire for AutoX.

[mjk3888]

Originally Posted by tx6g1le

They were MPSS and they were too wide. I lost a second from the stock set up on my local track AND they weren't any better on AutoX handling either. Went with Sport Cup 2s this time with 295F and 305R with camber plates. Track day is Sunday so hopefully, I'll have some news to share.

I don't have any experience with the RE71s but I'm sure they're great as that's THE tire for AutoX.

See the specs in Tire Rack. Tread Width on 305/30R20 MPSS is 11.8" exactly 1" wider than the stock 285's. That was the point of my first post. Research as much as you can so you know exactly what your getting dimensionally not just going by the numbers on the sidewall.

[Destroyer_1LE]

Originally Posted by seanblurr

Well, first, what is your main reason for wanting 305's on the front? Do you find the car needs more front grip? Do you want to be able to fully rotate tires? Just want that badass more filled out look?

I did the research and had the first set of wheels for the Camaro made in 19x10.5 +14 for the front, I did this because, personally, I could care less about poke for a track wheel. I also much prefer to have a wheel that pokes, but an unmolested strut, then a wheel that pokes slightly less but a strut that I had to cut parts off of. Understandably, the tabs you have to cut down aren't really a big deal, I just preferred not to have to do this. Anyways, the 10.5 +14 wheel ended up with these specs because I wanted to maintain an identical inner strut clearance to the stock front wheel. If you don't mind cutting the strut, you could probably get more 2-4mm more clearance, so add that back onto the wheel offset. Say, 10.5 +17. If you ran a camber plate, you could get all your camber from that and zero out the stock camber bolts giving you even more clearance at the strut, say something like a 10.5 +20. You would still have more poke than stock, but not a huge amount. Personally, all these theoretical's are a hassle, hence why I just dealt with the poke from the get go. If you want to be the guy who actually tests it, go for it

As I said in your other thread, I wasn't happy with my first set up. The car felt like junk and I ended up going back to my stock wheels and G3's and had way more ****ing fun. The car is an absolute animal completely stock. It turns out I had a few bent wheels, and I'm wondering if the bends were causing the MRC to freak out with rapid adjustments which caused the car to be all over the place. Other members have had success with bigger track tires, so i'm leaning towards a fluke issue like this, rather than the car just doesn't like stickier and bigger tires. I've got a new plan in the works, but it may entail 295/315 or 305/325. I'm not sold on 305 all around.

Lastly, not to try and rag on you at all. But, why the upgrade to BMR's full suspension kit, or even springs for that matter? Did you find something in the stock 1LE's package to be lacking?

I mainly want the front end grip from a 305 and BMR because of the adjustability

[seanblurr]

What do you feel needs adjustment?

[Destroyer_1LE]

Originally Posted by seanblurr

What do you feel needs adjustment?

Not 100% sure yet (still feeling the car out and want to try out new setups and see how the car responds) I have not adventured out of the track spec's however I think more caber would be nice maybe some front end toe adjustments.

[Provoste]

Originally Posted by Destroyer_1LE

Not 100% sure yet (still feeling the car out and want to try out new setups and see how the car responds) I have not adventured out of the track spec's however I think more caber would be nice maybe some front end toe adjustments.

Priority 1 should be to get the tires wearing evenly. Any tires you put on our cars are expensive, weather it be 20's or 19's. That means venturing outside OE track setup. I know some guys have complained about understeer, and yes--- the OE 285/305 stagger does have a bit of understeer, but it is still better than 99% of other OE track oriented sports cars.

I don't find the OE tire balance in any way takes away enjoyment of the car. Yes you need to use the gas more to rotate mid-corner and you can trail the car in a little more aggressively on turn in, but the OE staggered setup is DAMN good.

That being said, having gone through one full set of 295/30 20 RE71R's.... 295 square is my preferred setup. The 295's in no way upset the low or high speed stability and 295's don't have any issue in putting the power down.

[seanblurr]

Originally Posted by Destroyer_1LE

Not 100% sure yet (still feeling the car out and want to try out new setups and see how the car responds) I have not adventured out of the track spec's however I think more caber would be nice maybe some front end toe adjustments.

If that's all you need to do, this can easily be done with the stock suspension. This car is damn good from the factory man. Aftermarket stuff isn't always better.

[glamcem]

I was running 305/30/19 SQ setup with my apex wheels. Apex wheels are priced very reasonable and they're flow forged wheels, it only requires a slight grinding on the strut tabs and 5 mm spacer up front with track camber.

I am now running 305/325 with 19x10.5" and 19x11" wheels and there is a slight poke in the rear but it's not bad. Fronts are not an issue as -2.5 camber and above makes it really tucked in. More info
http://www.camaro6.com/forums/showthread.php?t=486305

See below pictures. BTW, May I ask why you are considering to get aftermarket springs? just for the looks? I wouldn't mess with the OEM MRC calibration by going with different spring rates and change the suspension geometry. There is a good chance that you can hurt the handling since it's not designed to be worked with

[booyaa56]

I run a 305 square setup on RE-71s and on a front 10 inch wide rim for autocross and have no issues. Of course the rear is a 11 inch wide rim to stay legal in AS class.

Originally Posted by FNxR3DNECK

Regret what exactly? Putting the 305 GY on your stock 20x10s? Like Mike pointed out the RE71Rs in 305 are quite as wide so they shouldn't feel as "sloppy" or whatever on a 10" wide wheel.

If I was to stick with the stock 20s I would do what you are with a 295 square set up of RE71Rs, but I want to go down to 19s, mainly for the weight savings but also so I can get a little more tire up front. I would just do 285/35/19 front and 305/30/19 rear but that would have the fronts with a larger diameter than the rears which I don't want.

I understand the "Don't put a 305 on a 10" wheel" argument but I have seen PLENTY of people run it on other cars(specifically the RE71Rs), including 5th Gen 1LEs for Auto-X. These WILL NOT be track wheels/tires, only for Auto-X if that matters in your argument, I will probably only attend 1-2 track days a year so I plan to use the stock setup for those.

I do appreciate the different view points, just trying to figure out what will work best for me haha

[FNxR3DNECK]

Originally Posted by booyaa56

I run a 305 square setup on RE-71s and on a front 10 inch wide rim for autocross and have no issues. Of course the rear is a 11 inch wide rim to stay legal in AS class.

You are the man I needed to talk to!!!! haha what offsets and camber do you have in the front?

[booyaa56]

I have the 5th gen 1LE offset, which still keeps you legal in AS. +23 up front and +43 rear. I do place a 5mm spacer on the rear to match the offset a bit and this combo works great....let me know if you have anymore questions

Originally Posted by FNxR3DNECK

You are the man I needed to talk to!!!! haha what offsets and camber do you have in the front?

[booyaa56]

Camber up front is -2.3 and rear is -1.5 and plenty of clearance

Originally Posted by FNxR3DNECK

You are the man I needed to talk to!!!! haha what offsets and camber do you have in the front?

[FNxR3DNECK]

Originally Posted by booyaa56

Camber up front is -2.3 and rear is -1.5 and plenty of clearance

What wheels did you go with? and what offsets?