power/grip issue

[Miggitystyles]

So I LOVE all the power and how my 2005 dodge magnum feels with the tune done, but since I have the cold air, exhaust, and extra large throttle body. The tires just break free all the time. If I want to drag someone I have to keep the idle real low because the tires will just smoke. Any ideas on how to fix this issue. Posi track that can be added? I have looked into spacers for the rear tires so I can get more surface area on the road, but I have heard that will cause a lot of tracking (tires following grooves). If anyone had a better way of taking care of this issue with out lowing the power let me know.

Thanks,

[Mike_Levy]

Put in a Quaife. Gonna cost you about $1300 plus install.

Thats exactly why I bought my Jeep when my CSRT8 was totalled, because theres no beating AWD.

[DGatzby1]

What a great problem, we all have it. Just practice getting that thing in motion by putting the petal to the floor S L O W L Y. Takes a lot of patience and practice, but you CAN launch it with minimal wheel spin and that is the trick. Additionally, I don't know what tires you have now, but some of us have put 275/40 on the back rims of the SRT's to get some additional rubber on the road.

[Miggitystyles]

I don't want an AWD. More power with the two, but thanks.

DGatzby1 thanks. I will work on it. I also wanted to know on the 275/40 what rim size are you going with as well do I need to flair out the sides to have the tires hit?

[Mike_Levy]

I don't want an AWD. More power with the two, but thanks.

More power? The motor makes the same power. Only difference is that I can get 550+hp down and you can't get down a measly 375.

[Miggitystyles]

Stating as drag I guess you did not get the point. There is more drag on a car with AWD. Just look at drap stip times. AWD always has a worse time that is just fact. Its amazing that you know my HP. Good to see your guessing sucks.

[DGatzby1]

DGatzby1 thanks. I will work on it. I also wanted to know on the 275/40 what rim size are you going with as well do I need to flair out the sides to have the tires hit?

Sorry, that is on the stock SRT rims.

[Miggitystyles]

If you don't mind me asking what you are running on the front?

[DGatzby1]

No problem, stayed with the stock 245/45. Looks real good, handles great, keeps the front end happy, does not increase the rolling resistance that a wider tire may produce up front. They were designed with the staggered size for a reason. Keeps the stealership happy just in case I need to make a extended warranty claim.

[Mike_Levy]

Stating as drag I guess you did not get the point. There is more drag on a car with AWD. Just look at drap stip times. AWD always has a worse time that is just fact. Its amazing that you know my HP. Good to see your guessing sucks.

That is not a fact. Yes, theres more parasitic losses, but theres also more available traction. Thats why the Grand Cherokee is the quickest SRT8, which is a fact. Its a good half second quicker to 60, and runs an identical 1/4 at a lower trap speed.

AWD has lower traps, but because of the killer launch, it can run comparable times.

[broadfca]

So I LOVE all the power and how my 2005 dodge magnum feels with the tune done, but since I have the cold air, exhaust, and extra large throttle body. The tires just break free all the time. If I want to drag someone I have to keep the idle real low because the tires will just smoke. Any ideas on how to fix this issue. Posi track that can be added? I have looked into spacers for the rear tires so I can get more surface area on the road, but I have heard that will cause a lot of tracking (tires following grooves). If anyone had a better way of taking care of this issue with out lowing the power let me know.

Thanks,

F.Y.I. only,

I just installed a pair of BFG 295/40zr20 (on the stock SRT rims) on the rear of my 09 chally. They're almost 1/2" larger diameter and 2" wider than the stock 255/45r20's. I adjusted the tire size whit my predator. Absolutely love them. No negative issues whatsoever, even with an adult passenger in the front and one in the rear.

[Lymzilla]

Traction is always an issue with Chrysler LX cars. You'd think that all that body weight would keep the tire traction up, but... especially with the rear-wheel models... the tires just break free. I had to get some 60lb bags of rock salt for the home water-softener, and had 240 additional lbs in the trunk. That made those tires stick, but (of course) I had more weight to move, so (ha-ha) it didn't make much difference.

I'd say you really need to look into some 'stickier' tires if you want to get more traction. And be aware that with some Super High Performance tires there's a sacrifice of traction to make the tire safe at higher speeds, so don't just buy a 'super-high-speed' tire if you aren't going to ever go that fast - it's a waste of money - usually. Also, you can lose some air pressure (2-3lbs) and that 'might' bring your traction back.

If you are going to look into a limited-slip differential there's (of course) Quaife, but you should also look into the Getrag diff that's on the new Challenger (fits LX models). The diff will help get rid of that 'fake' slip prevention that applies brakes to the rear wheels. That braking 'really' loses you some acceleration. I've been wanting a real limited slip diff for just that reason.

[brandy16]

You may want to try this to improve you launch. With you foot on the brake bring the rpms up to around 1500. When your ready to launch let you foot off the brake and don't push the accelerator to the floor for a half second. This allows you to start rolling with out braking the tires loose. Then put it to the floor. Practice until you get it down. If your running at the track you should take your rear tire pressure down to about 25 or 26 pounds. This will improve your 60 foot time and thus your 1/4 mile time. You will need to figure out exactly how to release the brake and hit the gas. Remember practice makes perfect. If you run at the track and decrease your tire pressure bring an automotive tire pump so you can bring the tire pressure back up before you leave the track .Hope I made the brake and accelerator thing clear if not let me know. 2006 300c with cold air and diablo tune running 13.8 at pacific race way in kent wa

[Pgcmoore]

Thanks,[/quote]

F.Y.I. only,

I just installed a pair of BFG 295/40zr20 (on the stock SRT rims) on the rear of my 09 chally. They're almost 1/2" larger diameter and 2" wider than the stock 255/45r20's. I adjusted the tire size whit my predator. Absolutely love them. No negative issues whatsoever, even with an adult passenger in the front and one in the rear.[/quote]

Are those KDW 2 's?
Any pics you can send me? Was thinking of buying those for mine