Tire selection help for forced induction
 

Ok so I got my wheels yesterday they're XXR 530 18x8.75 +33 in chromium black. I am now trying to figure out which wheels to get, as I plan on going FI next. The power goal is around 350whp, from either the Speed By Design or Vortech kit (Still on the fence). Anyway I was planning on getting 235/40/18 for tires, and was wondering if that will be ok for this power level?

I have 235/40/18 on my NA and it still spins the tires if I turn and power through. I think next time I'll go 240 or 245 just to get the wider look and cover my wheels from curb bite a bit more. I think if you went 240+ you should be good if you don't want to spin too much. The tire you choose also helps, Summer tires have better grip vs all weathers.

-RyanG

Thanks man definitely plan on getting Summer performance tires. I'll likely go with 245. Will those fit fine on these rims

I'm running 235/40 Michelin pss, with 287 whp I spin tires.. I'm going 245 next.

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I am running 265/35/18 continental DW and I just brought my car to the track and my car makes about 265whp and I was having so much trouble putting traction down. My friend with a lower power car with rs3 just pass me mid cornering and my tires were just spinning. Before we had similar setup with the same tires and I was 4 second faster so tire choice is a very important.

Damn! That's crazy. Think its due to the brand ? Do you think 255/35/18 would fit on these rims without sticking two feet out especially on the front? Need to order tires tomorrow so I can install them on Wednesday

Tire width is not that important at all for dry grip/traction...tire compound is way more important. You need to get a tire with the right rubber compound for your traction needs. The Extreme Performance tire category is what you should be looking at, unless you want to up it to some DOT-R rubber like Nitto NT-01's....

I was using a leftover set from my previous setup and thought I could use continental dw but I found out at the track it just was not suited for track days. like vracer said, compound is extremely important depending on applications. The continental where fine for the street but once I got to the track it was very disappointing if you are looking for pure track times. This apply to all brands, Hankook v12, falken fk, etc... Right tires for the right applications.

Thanks for both of your guy's help!

So, I'm likely just going to get 245/35/18's all the way around and get ultra performance tires. I was wondering though, would I be able to run the 245/35/18 up front and 255/35/18 on back? Figured it would give me a wider tire out back, where grip is most needed. I just DD the car and occassionaly get on it, never auto x. Not sure how it would look though, or drive. Typically it seems as though people who do that get staggered rims.

I'd say stick to one tire size so you can take advantage of rotating. Just choose the proper compound and you should have all the grip you could want. I recommend 255 all around since you'll be FI.

Good luck.