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Discussion Starter #1 (Edited)
I just added 345/30/19 rear tires to my 2016 HC. Stock size for vipers if I am not mistaken. Any heard of or seen any wider? This size is slightly shorter as you can see in the pictures. I did this for gear ratio reasons because I plan to run a 3.09 differential. Wheel size is 19x11 not sure of the back spacing or offset since I bought them used. They stick out (poke) a tad but I don't mind. If I had a widebody HC it would be perfect. I plan to lower it later to get rid of the fender gap.
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Are you road coursing with that 345 tire ?
That's not bad as far as sticking out past the fender , my 20x11 wheel with 315's are about the same.
 

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Discussion Starter #3
Are you road coursing with that 345 tire ?
That's not bad as far as sticking out past the fender , my 20x11 wheel with 315's are about the same.
My main thought was for drag racing. I wouldn't take RR off the table though.

305/30/20s are going up front later. Seems like an appropriate staggered size for the pair.
 

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Sounds good , but I think those 345's are more for RC not drag racing , but they may do good for that too ?

GL & have fun.
 

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345 is the widest tire I know of that will fit on the back of these cars with a custom offset wheel. Most people get them in 345/30/20 though.
 

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Discussion Starter #6 (Edited)
345 is the widest tire I know of that will fit on the back of these cars with a custom offset wheel. Most people get them in 345/30/20 though.
Thanks for the info. I hadn't considered looking up the 20s since I don't have wheels to mate with them.

I got the wheels used and a great deal from a guy who was trying to run them on a BRZ. So that's one of the reasons I went with 19 instead of 20.

345/35/19 would be much closer to stock diameter, but there are far fewer choices to pick from if you can find any at all.
 

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Nitros in 345 run about as wide as Michelin or Goodyear 305s. They should work fine on your car.
 

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Looks thick..🙂 Awhile back I was blasted for thinking of putting a 345 on my widebody 20x11 wheel..
 

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Discussion Starter #9
So, one caveat I will mention here when running either wider tires/wheels or smaller diameter wheels. Make sure nothing rubs!! I checked to make sure nothing was rubbing but apparently I did not check thorough enough. It's common for the wire that comes off of the strut for active dampening to be way longer than it needs to be. When I checked for rubbing I only listened and felt for any catching that would indicate rubbing. That wire rubbing on the tire and wheel did not alert me on either test and now I need a new strut because that wire is not an independently serviceable part. Lesson learned.
 

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So, one caveat I will mention here when running either wider tires/wheels or smaller diameter wheels. Make sure nothing rubs!! I checked to make sure nothing was rubbing but apparently I did not check thorough enough. It's common for the wire that comes off of the strut for active dampening to be way longer than it needs to be. When I checked for rubbing I only listened and felt for any catching that would indicate rubbing. That wire rubbing on the tire and wheel did not alert me on either test and now I need a new strut because that wire is not an independently serviceable part. Lesson learned.
Ouch.
 

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You'll love the 345 in the rear! Im running Triumph 3 piece forged rims,
11.5 up front with 12.5 in the rear with PS4s tires. No rubbing at all, also no poke over stock.

557692
557693
 

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Discussion Starter #12
You'll love the 345 in the rear! Im running Triumph 3 piece forged rims,
11.5 up front with 12.5 in the rear with PS4s tires. No rubbing at all, also no poke over stock.

That's so awesome!! Yeah, as soon as I put them on my car I was thinking this would be perfect on a widebody car.
 
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