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Discussion Starter #1
Hi guys

Im new to the forum so my apologies if this has been covered somewhere else, i read through nearly every thread with srt8 in it via search button but couldnt really get a solid answer to my question.

Im yet to purchase a WJ as im waiting for something decent to come onto the market, anyhow..... I love the look or 20" SRT8 rims on them and would like to know if its a suitable sized rim to have for offroad use?

Im not talking anything stupid serious in terms of rock climbing, or water bed crossings etc, just the occassional trip on the coast to access decent fishing spots, and the tracks required to get to some of these spots arent that gnarly but definately come across pot holes etc along the way.

Ive never owned a 4x4 before but have always been involved with people/family who have had them and they have always said to never go above a 17" rim when wanting to drive in sandy/boggy locations, the smaller the better due to having a bigger walled tyre. This is because you can let your tyres down more so than on a bigger sized rim and then have less chances of getting a puncture if you hit something hard unexpectedly and create more traction with deflated tyres.

I hope I explained this correctly....anybody care to share their experiences/knowledge on the matter?

When i get a WJ or WG as they are called here in Australia I will fit a lift kit of 2" so thought id mention that incase it matters.

Thanks in advance :D
 

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I thought about doing this for a while but decided against it due to the monetary cost of it. When I was looking into it, you would need to buy the srt8s, the tires, and a lift kit. The srt8s were gonna cost me about $1000. Then all the off-road tires (that have a decent tread) that have a 20" diameter are 33s/34s/etc and they were running about $400 a piece. So that's another $1600 for tires. Finally, that big of a tire wouldn't fit very well. It would require some modding of the wheel wells and a lift kit for clearance.

Which SRT8 style are you going with? Gen 1 or Gen 2 rim?

Will it work? Yes. Practical? Maybe.
 

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The Gen 1 came with the WK and the Gen 2 came with the WK2.

You don't NEED to run 33/34 but in the US those were the only tires I could find that fit a 20" rim and had a decent/aggressive tread on it.
 

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Discussion Starter #5
oh ok.....id imagine that would throw the speedo out quite a bit then?

If i went for a smaller sized tyre to suit the rims would it effect the performance of the 4x4 capabilities offroad much? I realise a tyre with a smaller wall cant be deflated as much as a tyre with a much bigger wall but will it be an issue in soft sand as much or not?
 

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There is a website where you can input your current tire size against your standard size and it tells you the difference between your actual speed and what the speedo will say.

It comes down to how much you want to be able to wheel it. If your just taking it down the mild trails, I think you could sneak by without a lesser tire but if you want it to be able to go through the mud then I think your gonna need to go with the bigger tires due to the tread.

I would look around and see what you can do in tires. I found that that was the most difficult thing to get right.
 

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Discussion Starter #7
Ok thanks for that.

Are there any members who have 20" rims that can share their experiences with taking them offroad??? How their car handled....pros and cons etc???
 

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I don't believe so. Everyone I can think of that's running 20" srts is a street member.
 

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There is one WK thats running reps and lift and offroad tires but I don't recall who right now? It's a black WK.

Anyways, I wouldn't attempt it unless you use a decent size tire, you need the siedwall to protect those expensive rims and still have offroad ability. Yes it will throw the speedo but thats a given when you start getting into offroad mods.

Also don't use staggered wheels use the fronts on back also that will save a lot of headache.

I was looking at this also but cheaped out.
 

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If you remember who it is lemme know! I wanna see pics but the best I did was photoshop it together.
 

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Damn.....now I wanna do this all over again lol


Dustin: RC 4" Long Arm kit with 20" SRTs sitting on 33s. That thing would be one bada$$ WJ!
 

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Ok thanks for that.

Are there any members who have 20" rims that can share their experiences with taking them offroad??? How their car handled....pros and cons etc???
I believe a member named NoOne runs 20's (not reps) with an SL and he wheels it all the time.
 

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Timmy D although they are cool wheels and the look is great research your costs very clearly before you go down that route. Bear in mind the cost for the SRT set up over here in Aus will be significantly higher than what our stateside cousins enjoy. An 18" SRT rep if it existed would be a more practical solution.
Couple of things:
Check the SRT offsets especially with the 10's mihgt not be legal over here. Also I don't like the split sizes for an offroad vehicle. That's passenger car only in my book.
Smallest 20" tyre I have come across is a 32" and is also illegal in most states. Also tyre choices in relation to brand and tread design is limited. Even more so over here we do not have the range of brands they do over there.
Not sure you can even source SRT's over here so you would probably have to bring ghem in yourself. 20" tyres over here would be about $500 ea.
2" lift with 32's is just BARELY acceptable and you will have a lot of rubbing and trimming to do however if you have the 10's on the rear I'm not sure how it would affect your articulation, even the 9's on the front might limit you even more. 2 1/2 or 3" lift would be much better butthen you step into another world of hurt with the cost of doing a larger lift properly so the thing still drives properly. Over the 2" lift in most states triggers engineering approval to be legal as well. Not sure if WA has implemented the uniform code of practice (whatever it's legal name is) but most states are gradually doing it which has given us a larger tyre allowance but tightened up the suspension lift.
Stepping up to a 20" rim regardless of your tyre size is also illegal in most states.
You would need to also check if the 32" rim is a legal fitment on the 10" rim.
a 20" with 32" tyre would be OK on the sand but not great. You will have to work the car a lot harder because you have the wider rubber without the length of footprint when you air down compared to say a 32" on a 17". Width is not the solution for beach work it is the taller tyre when aired down lengthens it's footprint. The width of the footprint changes little and at any rate just increases the amount of sand in front of the tyre you have to push along.

And lastly your family are right 20" are just not ideal for offroad use, not totally useless but given the cost to set up over here bang for buck is way out of whack. Maybe you should jump on ausjeepoffroad over here and follow the lament of the WK2 owners struggling with good offroad rubber choices in both the 18" and 20" sizes.

For my value for money and practical option it would be a set of 17 x 8 or 8.5 reps if they existed and 265/70-17's with a 2.5" lift.
 

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Discussion Starter #16
Thanks for the massive reply......I would be looking at a 2" lift any higher and it wont fit under the roller door!!

The cost didnt bother me, I would have probably imported the rims and 8 tyres to fit also, as your right about the price and availability of off road tyres here in Aus.

Ive spoken to a few 4x4 owners locally and they have all said to look at a 16 or 17" rim so you have a much broader selection of tyres to suit.

Its a shame coz I drool over the srt8 rims but I guess they not practical for my adventures in the long run.
 
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