johnnywfg

heres the link for the tires

http://www.hankooktireusa.com/produc...ail.asp?pid=86

I read a review from car and driver stating that they have incredible dry performance, and they are dirt cheap.

the closest size match thay have is 235/40/18, is this acceptable on the stock rim?

want to avoid any kind of rubbing, tpms glitch, mph gauge off.. etc....


here is a link to the car and driver article
http://www.caranddriver.com/article....ticle_id=10252

thanks for the help!

TeamRX8

iTrader: (25)

yes, no problem

good tire for the money, extremely good in the rain, still not as good as the Yoko Advan Neova tho but a lot less expensive ...

johnnywfg

nice.. think ill give em a shot eventhough the size is off... at a 100 bux per tire i cant lose

TeamRX8

iTrader: (25)

I didn't realize they released the 265/35-18 size, that would be a nice street tire with wider wheels ..

johnnywfg

bah... I'm getting soo many different answers its frustrating...

The dealership and the tire shop said do NOT put 235/40/18 on the stock rim..

they showed me on ther little mathmatical chart thats its like a -2.0 difference from stock size, which will result in mph gauge failure, rim damage from potholes...etc.

theoretically I should gain a little acceleration from a "40" over a "45"...

anyway... still deciding I know i will regret throwing the Kumho SPT's back on..

currently running Kumho SPT in the front and OE Potenza in the back (which are pancakes)... i know it sux having mismatch..

ac3mastuh

iTrader: (1)

245/40 is a better set up or the 225/45 (OEM)

great tire though

RNE515

Check out the tyre bible ...it has a tire calc that will show you the difference between the sizes and tell you how much your speedo will be off.

LionZoo

The dealer wants you to buy OEM tires from them at their inflated price. Yes your speedo will be off and you will be slightly more susceptible to rim damage, but the difference is only a few percent and if there aren't that many potholes in your area you should be okay. However, I'm not sure if you want to deal with those since the Ventus aren't really that great. In my opinion you're better off putting on a set of correct size SPTs even taking into consideration the extra grip the Ventus will give.

TeamRX8

iTrader: (25)

he's getting the 235/40-18 size, you wouldn't be able to tell any difference froma 245/40

you'll be very pleased for the money

LionZoo

True. I once saw a RX-8 with 235/40-18s and I didn't know they weren't correct sized until the owner told me. I guess I'm just a stickler when it comes to this sort of stuff and so would rather have the correct sized tires if they were available.

TeamRX8

iTrader: (25)

you're not a stickler, you just don't know any better yet ...

DaveCM203

With the smaller tire size you will also kill your milage since you will have to turn higher RPMs to keep the same speed.

That side is very cool. Everyone should check that out. Thank you.

TeamRX8

iTrader: (25)

those calculators are inaccurate, you need to use the manufacturer's stated diameter because the actual OD varies from the stated sidewall size spec

and small changes won't "kill" your mileage, the actual rpm change for this particular size is small, it only raises 3700 rpm to 3817 rpm

LionZoo

I resent that comment. While 2% might be "not a big deal" to someone, I generally try for the last half percent.

RX8Maine

But, you will think your mileage is better because the odometer will tell you that you drove further!. Nice trick, eh?

johnnywfg

well, ive researched around enough.. ive decided to just keep it simple.

going with these - BFGoodrich g-Force T/A KDW 2 size - 225/45/18
http://www.tirerack.com/tires/tires....ce+T%2FA+KDW+2


here is a comparison chart
http://www.tirerack.com/tires/survey...y.jsp?type=UHP

pep boys has a deal 4 tires for the price of 3. sounds good to me.

DrDiaboloco

And if you're going by the speedometer, you won't actually be going as fast as you think you are, which might keep you out of a ticket.

Tanaka826

just got some new kumho spts they are one of the best rated tires. feels pretty sweet

DaveCM203

Math does not lie. But liers do math. Maybe we need to go and put small tires on some people's cars on this blog so they will quit bitching and starting threads. Maybe they won't notice everyone blowing past them on the road.

TeamRX8

iTrader: (25)

I'd recommend the 245/40-18 if you go that way, we have those on our street RX-8, you'll need to run the front pressures high for good response and grip; low - mid 40 psig range

TeamRX8

iTrader: (25)

I'd bet you can't even drive consistent enough to stay in the last 5% let alone the last 0.5% ....

LionZoo

In terms of engineering Team, engineering. I get paid to extract the last percentage point of performance out of whatever my current consulting contract is. On the otherhand, I know my limits in driving well enough to know that yes, while I'm not a national champion, I don't have to go on an ego trip on a fellow member to make myself feel better.