cust0mx

I've got Conti 245/40/17s on now, but just bought Aspec wheels from a member on here. I plan to lower my car on Tein SA coilovers soon, so that plays a role in the tire size. I'm probably going to get some Nitto Motivos. Will a 235/40/18 be safe? I don't care for the stretched look, I just don't want the tires to rub once I drop the car 1.75"-2". I can always roll my fenders too, but would it be better to get a 225/40/18? Thanks!

FCVadi

iTrader: (3)

if staying with ASPEC then your 245/40/17s will not rub if you lower it since the offset is still +45.. your main issue of possible rubbing is offset of wheels

cust0mx

They are 18" Aspecs

justnspace

iTrader: (1)

I'll teach you how to determine proper tire sizes.

visit http://www.1010tires.com/Tools/Tire-Size-Calculator
and input stock tire specs, which are 235/45/17's

then you play around with tire sizes to figure out the same rolling diameter of stock tires.

but you dont even have the coilovers yet, so you dont even know how far you're going to lower it.
I would get the coilovers first, and adjust it to the height you want it! and then make adjustments with fender pulling, tires, fender shaving, etc.

cust0mx

I got a good deal on the Aspecs, so I pulled the trigger on them first, and now I need to get tires while Discount Tire still has their Labor Day sale.

Will 245/40/18 tires be a safe bet? I've looked at old threads and I've seen people running 225, 235, 245 and even 255.

Acura604

I kept it stock.. 235/40/18. general g-max. but my a-specs are 18x8. this is stock tire ratio to 235/45/17 as per our
favorite little tire calculator:

http://www.miata.net/garage/tirecalc.html

guitarplayer16

iTrader: (8)

I run 245/40/18.

Just got my Continental DW in that size. Ran the same size on previous tires Michelin Pilot Sport.

cust0mx

Is your car lowered? Experienced any rubbing?

guitarplayer16

iTrader: (8)

I'm on A-Spec suspension.
No rubbing sir.

Stock from factory is 235/40/18.
Most people on here go with 245/40/18 for a little bit of rim protection.

My rims are 8.5" wide, so the 245 looks normal on a 8.5" rim; not meaty or anything. On a 8" rim, 245 actually gives it the meatier look, and the "rim protection".

DrOwNiNgPoOl84

iTrader: (2)

I'm getting 225/40 for my 8" A-specs but I'm also getting for $240 so can't beat price

paperboy42190

iTrader: (7)

i had 245/40/18 on my 8.5 aspecs before

cust0mx

For those that have/had 245/40/18 tires, were you lowered, and if so, how much?

From what I've read the 245 will provide more protection, but speedometer will be slightly off. I'd like to get 245s, but not if they cause rubbing when I drop my car.

wilztlxs

iTrader: (8)

i have 245/40/18 on my RonJons that are 18x8. I'm lowered on Tein H-Techs, which is roughly a 1" drop all the way around and I have no issues with rubbing at all.

paperboy42190

iTrader: (7)

its only 1.5% too big...so instead of traveling 60mph, you will be traveling 60.9mph...even at 120mph it will only be off by 1.8mph. thats plenty accurate for me, especially when the stock speedometer sometimes isnt even perfectly accurate

cust0mx

My primary concern is rubbing. Since my car is still at stock height, I want to make sure I get a tire that won't rub once I drop it 1.5-2"

yoks032rs

With that drop, you'll be fine with the 245's. My drop 2.00 front and about 1.75
in the back. Riding on 235/35/18 on 18.75 all around with a+ 35 offset. My next
tires will be 245's.

paperboy42190

iTrader: (7)

i had 245/40/18 and never rubbed. lowered on tein s techs, there was plenty of space left, i dont think it would rub unless you are dumped to the ground

cust0mx

Thanks everyone for your input. I just bought some Nitto Motivo 245/40/18 for $700 out the door from Discount Tire with their replacement certificates and installation. Getting my Aspec wheels next week and then installing everything a few days later. The next mod will be lowering on Tein SA

jsonkimz

iTrader: (1)

Just had some 245/40/18x8.5's put on my car. Looks good.... but I think I will go with 255/40/18x8.5's next time. I like the meatier look. I'm on stock suspension but plan to go Aspec suspension sometime in the nearish future. I don't think would be be anywhere near rubbing as long as you do a reasonable drop.

CLtotheTL32

iTrader: (3)

You won't be close to rubbing with the 245s you ordered unless you add spacers. Be sure to post pictures when everything is installed

HotboyTl07

225/40/18 is good to have on them aspec times I got the tires size also in my aspec rims

NBP04TL4ME

FWIW - I had 255/40/18 on my 8.5" A-Specs for 12 years with no issues.

CLtotheTL32

iTrader: (3)

Holy 11 year bump