Wheel and Tire size options

krazy-knuck

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Hi,

I'm looking to purchase a 1999 RT/10 with 18" wheels with rear 335/30R18, front 275/35R18. I haven't found a lot of tire options in these sizes. Are their any other tire sizes that will work with this vehicle? Do the wheels need to be changed for other tire sizes?

Thanks,

Krazy
 

MoparMap

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The later cars use 345 section rear tires, so that would likely fit under your fenders at least, but looks like those sizes aren't really any more available. They tend to use 19" wheels on the back too, so unless you got new rims you're in a bit of a pickle. My mom has the same problem on her 94 with 18" wheels. It was pretty much Michelin PS2's or full on track tires. She used to have some Kuhmos that she really liked, but they have since been discontinued or at least haven't had another run made in quite some time.
 

Titan1969

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I'm running Toyo Proxos R888R in...
335/30 R18
275/35 R18

1995 RT/10

Excellent tire and corner grip
 

MoparMap

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The stock 19" rims take 345/30-19 tires. I've run Michelin Pilot Supersports since I got the car and have been very happy with them. I think you get a few more choices in this size, but it's still pretty slim pickins when you get that wide. I believe the gen 5s run Pirellis and I think Nitto still makes the Invo in that size.
 
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MoparMap

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Can you run 20" in the rear and 19" in the front?
You should be able to, but you'd just have to be careful and watch the overall diameter with a tire mounted. I think many of the custom wheels are larger diameter than stock.
 

Skolnick89

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I just bought a beautiful as new 1998 GTS. Red with silver strips.
But a few oddities.

Car has CCW wheels 17” rear and 18” fronts. Just ordered same size tires as Car came with, 335/35-17 and 285/35-18.

I see why 18” upfront. Prior owner upgraded rotors to 14”.

Does anyone have any clue why prior owner left rear 17”?

Second question, maybe wrong thread. Ride height. Measured chassis to ground adjacent to front and rear wheels. I have about 4”
Measured to top of fender I have 26.5 front and 27.5 rear.

Anyone know where it should be?
 

MoparMap

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That's pretty bizarre. Wonder if it had something to do with either tire selections or just rim availability. I have a hard time believing CCWs don't come wide enough in 18"+ varieties. Do the tires match? Sometimes people will do funny rear tire sizes for stuff like drag tires, but not typically street setups as far as I'm aware.

As for ride height, I don't quite remember my exact numbers, but those sound in the ballpark at least. The rear is typically at least 3/4" of a inch higher measured at the frame to the ground. I know I've lowered my car slightly with some MCS singles, so my numbers aren't going to be "right" so to speak.
 

Skolnick89

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I found a company that could upgrade my 17” to 18” then I realized no one makes street tires for the rear. Can’t upgrade my wheels to 19”, would need to buy new ones.
 

white out

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I found a company that could upgrade my 17” to 18” then I realized no one makes street tires for the rear. Can’t upgrade my wheels to 19”, would need to buy new ones.
Toyo, Pirelli and BF Goodrich make street tires for the rear (335/30R18).
 

viper k

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i have some 18/19 sidewinder wheels and tires for $2500 thanks viper k
 

viper k

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yes i have the wheels and tires i say ther are a 9 out of 10 give me a call 412 582 0188 thanks ken
 

Frank Parise

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Decided to stay with the original factory wheels on my 99 RT10 (18 X 10 front, 18 X 13 rear). Just ordered a set of the Toyo Proxes R888R. 295/30ZR18 front, 335/30ZR18 rear. Very aggressive looking tire. $1,249 delivered to my front door. Thank you Jon B. at Parts Rack.
 

deep316

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Decided to stay with the original factory wheels on my 99 RT10 (18 X 10 front, 18 X 13 rear). Just ordered a set of the Toyo Proxes R888R. 295/30ZR18 front, 335/30ZR18 rear. Very aggressive looking tire. $1,249 delivered to my front door. Thank you Jon B. at Parts Rack.

Hi Frank, I spoke with Jon B too, so is that wide tire combo he is talking about for our Gen 2 Vipers ?
 

Frank Parise

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Hello Deep,
Yes it is. I believe you can actually safely put a 305 on the front 1999 OEM 18" wheel but I chose to go with the 295 which is still a nice upgrade from the 275. Jon B. can steer you right.
 
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