In this video, I'm going through my experiences with tire Setup on my stock 20x9'' wheels. I cover pretty much the basic of tire Height, Profile & Width.
The contact patch on those 265's appears that way, because they're designed for that edge of the tread to contact only under high g loads while turning. The rears being 285's, now that is because you're tucking a big tire onto a little wheel.
Every tire has a slight 'roll' as the main surface transitions to the sidewall, there is no completely 'square' tire where the edge is 90 degrees to the main contact tread of the tire.
You must have some negative camber in the rear to have that much edge not touching the road. Check the wear in the inside. It would be worm down more than the outside. Most Challengers have a bit of negative camber, some more than others.
I have an SRT 392 with 9.5" rims. I'm going with the 275s in the front and 305s on the rear. Trying to decide between the Michelin P4s or the Continentals. I need tires that hook because these Pirellis are great for cornering but don't hook worth a damn.
Wouldn’t it make a difference during a turn the roll of the car will go on the outside of the tire and wouldn’t you have to air down a bit to get the full contact patch of the tire ?
Hey Mike i know this video is about tire size but would you happen to know if i'll have a problem going with a 9.5 Daytona SRT wheel with 275/40/20 tires all the way around? I have a 2016 R/T Plus.
What's up Hemi mike, nice video, i have an idea of what u talking about, but my question is iam having plan to get a 20×9 rims with a good offset for a 245-45-20 in the front or a 255-45-20...and 20×10 rims for a 275-35-20 in the back, this is my question do this simply change will mess some numbers in my car computer, i say simply change because i know that the majority of guys got much bigger tires and rims that what i like to have for my car. Thanks in advance.
Right, I did not mentioned it but I tested it Based on 32psi. Ive lowered it to 28psi but without any difference. Lower than that, it would CUP the tires. Thanks
i tried to put 275 in the rear on my stock rims from 2016 rt shaker, but they told me that it might rub the fender liner inside, so it would be better to modify suspension first, before putting bigger rims. Where they right or wrong?
@@HemiMike what about safety? i think on my rims recommended max size is 255 at least from the chart. would 20x10 on rear require any suspension tweaks?
I'm having a new setup installed on my Scat Pack Challenger this week. The fact that they put 245s on an almost 500Hp car is just not safe. I'm getting 9.5 inch wheel on the front and 11 inch on the rear. Going with 275 and 305 Mickey Thompson Street Comp tires. I'm hoping it helps a lot. This was my biggest complaint with the car and the first high priority mod I'm doing to the car.
Hey Mike! I got the same BBS on my R/T. I was told that it is 8.5” and wouldn’t fit 275’s. So you did put some 285’s on it… Is it really 9? would fit 275s? Thank you.
Yes You can. Ultimately on a 8"rim the 245/45 is the best setup. With 255/45 it will ride a 1/4 of an inch higher with a bigger side wall, a beefier look for sure. It will feel less crisp on turn in but the ride will be smoother. I Doubt it will improve grip level on regular tire pressure but perhaps a bit at the drag strip if you lower the temps and have a soft sidewall tire. Your tire choice is the most important one, not 245 or 255 in your case.
You would get more of a taller look then wider with it. Althoug I had the 255/45 in the back and absolutly.love the look of them. They fit very nicely in the back. I did have 255/40 in the front. Here is a link to see it. Take a look at the Non Stripe look. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-nFkoTXBbWx8.html
have a 6sp rt too. was going to try just 275s all around on the 9 inch but now i think i will have to get some 10 inch rims at all corners. what was dodge thinking with 245? i actually theorize that it's to keep people from pushing such a heavy car too far.
As a car manufacturer Dodge had to make a cost effective choice first, then they needed to accommodate 1 tire size to fit 2 or 3 Size wheels...some have 8'', 9'' and I believe even 7.5'' width on the Challengers/Chargers. So a 245/45R20 is cheap money and fits all.
I'm still a long way from needing new tires on my Scat Pack, but I would like to go with something a little bit wider. I was thinking of 255/45R20 to give a little more sidewall height, but have no idea if I'll have tire rubbing issues with a slightly taller tire. So, my question is 255/45R20 or 255/40R20 ?
Hi Keith, well if you want a taller tire then 255/45 is the choice and won't rub. The 255/40 is shorter than stock size. Both are good options and I running now with the combination of both of them. 255/40 fronts and 255/55 rears which gives a nice rake muscle car look.
@2:20 you talked about the 1cm section of tire on the outside edge that isn't getting contact with the road because 265 is too wide for the rim. Going to 255 is your remedy. Do you think there is also another 1cm section on the inside edge of the tire too? There probably is. This would mean a 245 size would be best for 9in rim.
Nice write up! No because of the small negative camber the inside is section is fully in contact. I did go the 255 Michelin PSS after that video. Still running them 255/40R20 front and 255/45R20 Rears...a have more videos on this subject. Thanks for watching!
Hemi Mike I’m running 305s in the back with a different offset. 20x10 +20 offset. I’m just looking for new front tires. 245s are a tad bit stretched on a 9” wide wheel.
@@HemiMike I wish they make my rim the one black but I can’t find any on 9 inch I’m thinking in a year they’ll make em but not for now then I’ll put 275 on a 9.5 rim I have 295 on a truck and the tire is massive looks good though this was a good video amd will save me money safety
@@HemiMike so to maintain same size as stock since I’m going a size up to 255 what height does the tire need to be to be same as Stock old Goodyear 245 tire 20
This vehicle requires 35 psi in all 4 tires from factory. Put 33 psi in the front tires and 30 psi in the rear. Reset your tpms system at those pressures that way the light turns off and your set. Should get your 0-60 0.3-0.5 faster.
Hemi Mike i averaged a 5.0 on my 0-60 best being a 4.8 with the stock good years eagle rsa2 245/45 r20. my rims are 20x8 and i put 275 nittos on the rear today and my 0-60 dropped to a devastating 5.7 and up.. challenger rt
Yall realize that 275s come standard on a Camaro ss with 20x9 wheels? And I'm seeing people comment they are scared to go above 255 on a 9in wheel. Lmao
@@scottmiller7284 actually now I’m 20x9 275/40 and 20x10 315/35 18mm offset is the sweet spot on the wheels. Mike_from_queens on the gram I can send you a pic
He’s not considering the air inside the tire. Specs might change even tho it might say eg: 45 psi on the tires, since he has a 9 in wheel, he might need less air in the tires.
Your only looking at the outside edge. So x2. the opposite side of the tire =2 cm. Front 265-2cm=245. Rear285-4=245. Any tire guy worth a grain would never put that 285 on that wheel. 275 max. You need a 10” wheel front 11” rear. 265 front. 305 rear
👂Listen up Challenger RT Scat Pack owners with stock 9inch wheels who are looking to upgrade your tires. Check out these, most bang for your buck tires. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Cz0w8Sw9dZM.html m.tirerack.com/tires/tires.jsp?tireMake=Continental&tireModel=ExtremeContact+DWS+06&sidewall=Blackwall&partnum=74YR0DWS06XL&tab=Sizes Here's a review link you'll find very informative. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Cz0w8Sw9dZM.html One hell of a set(4) of 275/40ZR20 tires with a tread wear warranty of 50K miles and a UTQG number of 560 all for about $900. Over 1K positive reviews. Remember these are "all season" not like most performance tires that are "summer only". Big difference. ☝️Probably the best Ultra High Performance All Season tire available, hands down. Also the 245/40ZR20 are available for a smaller two front tire option. ($215) Now if you have the wider 11inch wheels, and for a better grip & bite on the "REAR" only, recommend two of these. m.tirerack.com/tires/tires.jsp?tireMake=Continental&tireModel=ExtremeContact+DWS+06&sidewall=Blackwall&partnum=135YR0DWS06XL&tab=Sizes Again the most bang for your buck, "REAR" only. ($287) 315's Wow. 🇺🇲Stay well. Go in peace.
