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Old 04-08-2016, 04:15 PM
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Question on SRT8 Wheels&Tires

Good afternoon all,have a question regarding SRT wheels and tires.......have decided to dress up my '11 JGC Laredo,love everything about it.Have a chance of a set of SRT wheels and tires,having never been lucky enough to ride in one,I am wondering if changing these out for my stock "17 if it will affect the ride quality of my Jeep,would I need to upgrade the suspension?I have owned Jeeps for many years but am the first to admit I am ignorant of what to expect in ride quality going to a bigger rim,albeit factory rims.Did modify my '90 Wrangler many years ago,from new(well,paid a company to do the work!) so can't compare ride difference there.
Any info is greatly appreciated,advice and opinions carry a lot of weight with me here,way above anywhere else,as I see plenty here who are OWNERS of modified Jeeps.Thanks for the advice/help in advance.

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Old 04-08-2016, 10:09 PM
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Re: Question on SRT8 Wheels&Tires

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Originally Posted by CT2011JGK View Post
Good afternoon all,have a question regarding SRT wheels and tires.......have decided to dress up my '11 JGC Laredo,love everything about it.Have a chance of a set of SRT wheels and tires,having never been lucky enough to ride in one,I am wondering if changing these out for my stock "17 if it will affect the ride quality of my Jeep,would I need to upgrade the suspension?I have owned Jeeps for many years but am the first to admit I am ignorant of what to expect in ride quality going to a bigger rim,albeit factory rims.Did modify my '90 Wrangler many years ago,from new(well,paid a company to do the work!) so can't compare ride difference there.
Any info is greatly appreciated,advice and opinions carry a lot of weight with me here,way above anywhere else,as I see plenty here who are OWNERS of modified Jeeps.Thanks for the advice/help in advance.
Going from a smaller rim to a larger one (same overall tire dimension) will impact ride quality. Bottom line is that the sidewall of the tire acts as part of the overall suspension of the car. Shorter sidewall has less give and will be translated up into the shocks and into you. I don't think you will need to upgrade the suspension, but it will likely ride rougher than it does now but probably not any worse than a SRT or a limited/overland with the 20" wheels.

The other thing to think about is braking. The rotating mass of a wheel makes a big difference in how effective the brakes are and stopping distance. I remember a study back when 20" wheels first started coming from the factory where they tested an escalade with 17" wheels and then again with 20" wheels. Seems like stopping distance (60mph to zero) went up by about 30%. I would do some googling and find the weight of the SRT wheel vs the stock and perhaps consider upgrading the brakes.
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Old 04-08-2016, 10:25 PM
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Re: Question on SRT8 Wheels&Tires

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Originally Posted by CT2011JGK View Post
Good afternoon all,have a question regarding SRT wheels and tires.......have decided to dress up my '11 JGC Laredo,love everything about it.Have a chance of a set of SRT wheels and tires,having never been lucky enough to ride in one,I am wondering if changing these out for my stock "17 if it will affect the ride quality of my Jeep,would I need to upgrade the suspension?I have owned Jeeps for many years but am the first to admit I am ignorant of what to expect in ride quality going to a bigger rim,albeit factory rims.Did modify my '90 Wrangler many years ago,from new(well,paid a company to do the work!) so can't compare ride difference there.
Any info is greatly appreciated,advice and opinions carry a lot of weight with me here,way above anywhere else,as I see plenty here who are OWNERS of modified Jeeps.Thanks for the advice/help in advance.
I have a 2014 with a 3.6l and I went from the stock 18's to a set of 22"s and I thought it drove great..no need for any brake upgrades

I then switched to a set of srt knockoff 20's on 295/45/20"s and it drove even better..I ended up installing brembos but only for looks ..

I've been through 5 sets of wheels and tires in the past 2 years and I think you'd find anything in the 20-22" size to be just fine ..at least I have
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Old 04-08-2016, 10:52 PM
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Re: Question on SRT8 Wheels&Tires

You may also want to look at tire width. The current srt8 tires are 11.6" on a 10" wide wheel. Your stockers are 9.6" on a 5.5" wheel. That is a lot wider wheel. I don't know what the offset is, but you might want to throw one of the wheels on before you pull the trigger to make sure it fits and doesn't stick out too much....
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Old 04-08-2016, 11:13 PM
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Re: Question on SRT8 Wheels&Tires

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You may also want to look at tire width. The current srt8 tires are 11.6" on a 10" wide wheel. Your stockers are 9.6" on a 5.5" wheel. That is a lot wider wheel. I don't know what the offset is, but you might want to throw one of the wheels on before you pull the trigger to make sure it fits and doesn't stick out too much....
It looks like the stock offset is 39mm/56mm front/back and the srt8 is 34.75mm/50mm. That works out to be basically the same offset from centerline. So about half that width difference will go inside and the other outside. If you have clearance issues on the inside you could always do a spacer, but that puts even more tire poking out. It may be enough that you will need a flare of some kind.
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Old 04-09-2016, 11:47 AM
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Hey crom and ajag you BOTH gave me some great feedback I really appreciate, crom,it NEVER occurred to me on stopping distance,I researched,as you suggested,and your right,I knew about the width of the rim and does sit pretty nice and fills the wheel well,but stopping distance does bother me.ajag,your points too have been really helpful and appreciate you posting a picture too,it's good to know I don't need to do any upgrades either.
I DID buy the rims and tires,friend I got them from just wanted them gone,so lucked out and got them with great tires and tpms for $400 and did put them on. I will run them for a month or so to see how I get on as I am really mindful of stopping distance,(never drives fast anywhere but can never anticipate other road users driving),as pointed out by crom,it is a slightly harder ride,haven't hit a pothole or bump yet so marginal difference in ride.
ajag,it's VERY likely I will copy/steal your cool looking red brembo set up as I gotta say it looks great.
crom,it is always in the back of my mind on all your points,but like I noted,I will run it for about a month,and if I end up unhappy overall,I can sell them on Craigslist for I am guessing,nearly double what I paid(just guessing).
Anyhoo,THANKYOU both for some invaluable input,as my original post noted,I trust input on this forum above ANYwhere else as you guys,like me,own these rides and can give real world answers.
I remain on the fence at the moment and will see how things go in the next month.Suffice to say,they fill the wheel wells nice,look incredible slight difference in ride quality(not a harsh or hard driver),out of this '11 and our '15 this is my baby.
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Old 04-10-2016, 09:38 AM
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Re: Question on SRT8 Wheels&Tires

SRT wheels will be 100% plug and play. Ride will be just fine as even SRT sized tires have pretty big sidewalls. The ride may firm up a little but won't be significant. The one thing to note is the SRT sized wheels and tires are VERY heavy and you will feel it especially driving the V6. Even fuel economy will suffer a couple mpg unfortunately. They will look nice though.
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Old 04-12-2016, 03:58 PM
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Re: Question on SRT8 Wheels&Tires

Thanks for the input JTS,appreciate it,yes I have already noticed it alittle heavier and that will help with my final choice after about a month of use,had some great feedback from you guys.As I noted,if at the end I don't like the ride will switch back to my stock 18"s and sell these either here or Craigslist,by the way yours with the black rims,looks incredible!!!Really looks cool on that white Jeep of yours.
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