305 or 315 18 inch tires?

[TransHed]

So I plan on getting set of 17x9.5/18x10.5 Machined C5 Deep Dish rims in the next month or two for my Trans Am. I have a new pair of 275/40/17's for the front already and will just need two rear tires for these things... the problem Im running into is that, it seems like every single tire I look up to fit this set up in the 305 or 315 range runs around $300 per tire (street or drag radial). Ive never even taken my car to the track, so running a drag radial really isnt something I'd care about.

Now I plan on going with these rims no matter what (even if I have to throw down like $600 for two tires), but Im just wondering if anyone has any form of deal on tires they can get their hands on for this size?

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[Smokinhot]

just go 315 IMO

 

[willizm]

I went with nitro 555's an they are 315's. I did have to do the BFH mod to keep them from rubbin the inside fender wall. I'm going to get the nt05r's next. Hear they are great on the street and are predictable if it rains.

 

[TransHed]

just go 315 IMO

its not a matter going with one or the other... its more of a matter of finding lost cost tires in either size.

 

[PANDA]

Best bet would be to look used.

 

[TransHed]

thats what im thinking. i think no matter what im going to have to fork up like $500-600 for tires. too bad they dont make the rims i want in a 17x11 like they were trying to do.

 

[utryd2]

Check eBay. You can find some deals for new and used.

 

[CrunkMaro]

+1 on used.

also...

make sure you look at specs on the tires because just going by sidewall ratings won't cut it...i noticed that some 315/30/19s (just to give an example) have less tread contact area than some 295/30/19s...

tirerack does a real good job on all that stuff


i bought 2 x 305/30/19s pirelli pzero rossis (about 400 a piece new) with 70% life left for 100 bucks a pop shipped. can't go wrong.

 

[willizm]

Bought my setup used. Got a set of TTM's wrapped with Nitto's with 90% tread left for around $900. Rims were spotless with no sign of curbing.

 

[Intel]

I was going to say that paying more for stickier 295's might be better than cheaper 315's for actual traction. But I am not sure what kind of mileage you are trying to get out of these tires.

I have run 275's on 10.5 inch wheels and upgrading to 295's this summer.

 

[TransHed]

Its actually more of.. filling out the rear wheel well more than anything at this point. If you look at this picture of my TA with my current 17x8.5 C6 rims on there with 275s.. they sit so far in the wheel well and it looks ridiculous. Im sure the shape of the rim doesnt help this.

Id be ok with 295s on those 18x10.5 rims Im getting in the rear. Its not like I need the traction, the cars not putting down anymore than 320 at the wheels.

 

[willizm]

Here is some shots with my 315's in the rear to give you an idea of how they sit. The only thing that I had ran into was that I had excessive wheel hop and it gnarled up the side wall a little on the passenger side. I since fixed with better shocks and LCA's. No problem with wheel hop now.

 

[willizm]

Also, here is a comparison of my old 245 or 235 rears to my new 315. The previous owner didn't replace them with 275's for some odd reason.

 

[TransHed]

My TA is also lowered, so Im sure im going to have to pound in the wheel well no matter what I get lol

 

[willizm]

My TA is also lowered, so Im sure im going to have to pound in the wheel well no matter what I get lol

Yeah, you probably will. Some guys don't have to, some guys do. I had to and I'm at stock ride height.

Also, your panhard bar is the adjustable one right? I know my one side was a little closer to rubbing than my other. I had to adjust the panhard a little to center them up a little better.

 

[TransHed]

Yeah, you probably will. Some guys don't have to, some guys do. I had to and I'm at stock ride height.

Also, your panhard bar is the adjustable one right? I know my one side was a little closer to rubbing than my other. I had to adjust the panhard a little to center them up a little better.

Yeah, its a single adjustable.

 

[Handsome Jesus]

rent an eastwood fender roller and roll the fenders

 

[willizm]

Gotta be careful rolling the fenders. i had straight line do it as I couldn't find a tool. Had to go back and sand down the chipped paint on the area they rolled and hit it with primer so it wouldnt rust.

 

[Intel]

Gotta be careful rolling the fenders. i had straight line do it as I couldn't find a tool. Had to go back and sand down the chipped paint on the area they rolled and hit it with primer so it wouldnt rust.

Did they heat up the paint on yours? Projectx did mine and it only chipped in one small part.

 

[Intel]

Its actually more of.. filling out the rear wheel well more than anything at this point. If you look at this picture of my TA with my current 17x8.5 C6 rims on there with 275s.. they sit so far in the wheel well and it looks ridiculous. Im sure the shape of the rim doesnt help this.

Id be ok with 295s on those 18x10.5 rims Im getting in the rear. Its not like I need the traction, the cars not putting down anymore than 320 at the wheels.

If you care more about pushing in and out then just make sure the offset of the wheels will push it more towards the outside of the wheel well. At worst you can use spacers but some people don't like doing that.

 

[willizm]

Did they heat up the paint on yours? Projectx did mine and it only chipped in one small part.

I don't think they did. I kinda expected it to happen and its on the inside of the rolled area so it's not visible to the eye. How is projectX. I hear nothing but good things about them in the z community.

If you care more about pushing in and out then just make sure the offset of the wheels will push it more towards the outside of the wheel well. At worst you can use spacers but some people don't like doing that.

I wouldn't do spacers if you don't have too. I'd rather bang up the inside fender wall then have less thread for my rear tires to sit on the studs

 

[JDHedman]

305/30/18 Kumho Ecsta V70A $224.10 per tire W/ free shipping

Sumitomo HTR Z III 295/30ZR18 $210.00

TOYO Proxes R888 315 30ZR18 $260.98

Falken Azenis RT-615 315/30/18 Tires (2) $425 shipped


2 PIRELLI TIRES 295/30/18 ZR Pzero Asimmetrico N3 USED $144 shipped

and a bunch more 295 on ebay

C-List Falken Azenis RT-615 315/30 R18 tires NEW $400 Glendale Hts

 

[TransHed]

305/30/18 Kumho Ecsta V70A $224.10 per tire W/ free shipping

Sumitomo HTR Z III 295/30ZR18 $210.00

TOYO Proxes R888 315 30ZR18 $260.98

Falken Azenis RT-615 315/30/18 Tires (2) $425 shipped


2 PIRELLI TIRES 295/30/18 ZR Pzero Asimmetrico N3 USED $144 shipped

and a bunch more 295 on ebay

C-List Falken Azenis RT-615 315/30 R18 tires NEW $400 Glendale Hts

Woot! Thanks J. I havent even done a search for 295s yet. Just 305s and 315s

 

[Intel]

I don't think they did. I kinda expected it to happen and its on the inside of the rolled area so it's not visible to the eye. How is projectX. I hear nothing but good things about them in the z community.



I wouldn't do spacers if you don't have too. I'd rather bang up the inside fender wall then have less thread for my rear tires to sit on the studs

Did a good job, if you heat up the paint it makes a big difference at least when I have seen it done. Great guys and a great price. Have my rears rolled from them without any problems.

Spacers I would only use extended lugs or bolt on hubcentric spacers with their own lugs built into them. Run a small 5mm spacer in front for some extra clearance with my suspension without a problem.

 

[JDHedman]

http://m.ls1tech.com/forums/showthread.php?t=1367990