[707F6F]

Hey all, I have a 19 hellcat and thinking about getting some stickies. Car is currently lowered on Eighbachs with 20x11 ferrada fr4s wrapped with 315 555r2's. I have read some posts but nothing clear to me on a few questions. I plan on changing the gears to 3.09's in the near future (when time permits). I have the diff but time is hard to come by with 2 littles. Would it be better to run a 305/45/17 or 315/50/17? I really don't want to take a slege hammer to the typical spots where it would rub. But if gearing is an issue I'll have to rethink my game plan. Any help and suggestions is much appreciated.

 

[dragrcr]

Hey all, I have a 19 hellcat and thinking about getting some stickies. Car is currently lowered on Eighbachs with 20x11 ferrada fr4s wrapped with 315 555r2's. I have read some posts but nothing clear to me on a few questions. I plan on changing the gears to 3.09's in the near future (when time permits). I have the diff but time is hard to come by with 2 littles. Would it be better to run a 305/45/17 or 315/50/17? I really don't want to take a slege hammer to the typical spots where it would rub. But if gearing is an issue I'll have to rethink my game plan. Any help and suggestions is much appreciated. View attachment 576419

If you run the 305's mentioned you can pretty much run any rim you want. But with the 309's you are only going to hook with the very best prep. If I was going to try and fit 315's I would probably run a 17X10 Billet Specialtires Win Lite. Or I would go with a Bravado Tribute with a 305/45R18 ET STREET R. It would even match the wheels you have now somewhat and the tire is taller and will work better with the 3.09's. The Bravado offset is a little better, similar to the Win Lite.
.

 

[Club Drew]

Mine are fine 20" also 305/35 R 20 good luck

 

[707F6F]

I'm looking for a track tire. I run 20's now with 315's.

 

[707F6F]

If you run the 305's mentioned you can pretty much run any rim you want. But with the 309's you are only going to hook with the very best prep. If I was going to try and fit 315's I would probably run a 17X10 Billet Specialtires Win Lite. Or I would go with a Bravado Tribute with a 305/45R18 ET STREET R. It would even match the wheels you have now somewhat and the tire is taller and will work better with the 3.09's. The Bravado offset is a little better, similar to the Win Lite.
. View attachment 576420

Thanks for the input. Curious if any one else is running 3.09s with 305 MT tires and how they hook. I definitely don't want to leave much on the table.

 

[YMMV]

305's if you are on the 2:62's.

315's if you install the 3:09s.

The 305s are a 28" tall tire vs the 315's is about a 30" tire. That alone is going to effect your final gear ratio.

 

[GreenMachine15]

315 50 17 mt with the rib pound job.
No regrets.

 

[Force_Recon]

I would run a 305 MT Street R's as opposed to the 315's. Better fit for a lowered car and with an 11 inch wide rim it will lay down a flatter and wider footprint than a 315. A lot of folks try to stuff the largest tires they can shimmy onto their wheel. What ends up happening is that they bulge from the sidewall and when you track them enough they will wear out from the middle and leave lots of unused meat on the sides because it's too big for that rim. Some will try to offset the problem by running them with very low air pressure but that nibbles away from your ET.

I run those same tires on a 10.5 inch rim and I can practically floor it off the starting line with no tire spin. I used to get a bit of wheel hop but the DIR's diff brace seems to have solved that problem. I run them aired at 25psi. I don't have a TPMS on those wheels so I have no clue what the PSI's increases to after the burn out. I'll 60 foot a 1.5x and ET10.8x in the quarter mile on a full weight/fully loaded Charger. I'm sure I can do better, just don't get to the track as often as I'd like even though it's only 6 miles from my house...yeah I know.

 

[GreenMachine15]

^
315 50 17 is ideal on a 17x10.
I get perfect even wear, and alas, my car is lowered on eibach prokit springs. I run a 2 step and it digs from the hole...... Fits tight on a challenger, but looks absolutely killer, and hooks so damn good. A 11 inch wide wheel is a waste of rotating mass in my opinion.....

 

[707F6F]

^
315 50 17 is ideal on a 17x10.
I get perfect even wear, and alas, my car is lowered on eibach prokit springs. I run a 2 step and it digs from the hole...... Fits tight on a challenger, but looks absolutely killer, and hooks so damn good. A 11 inch wide wheel is a waste of rotating mass in my opinion.....

I've read chargers have more room? Have any links or videos of the hammer mod? Really nervous to pound on my frame like that.

 

[GreenMachine15]

I do believe chargers have more room

 

[707F6F]

Seems like the general consensus is to run the 315s with my 309s.

 

[moparjim]

Or run the 305's with the 2.62.😉

 

[Barbell_Cat_717]

315 50 17 mt with the rib pound job.
No regrets.
View attachment 576466

I like your setup. Do you run those MT et r's full time? Also just curious, what made you go with a 315/50 as opposed to a 305/45?