Why would you have loss of performance with wider tires? If anything, you would get more traction, no?

 

If Jb's wheel/tire combo number's are correct and I have no reason to doubt those numbers, at this time. Any loss of performance, which ssk was eluding to, would be due to the additional weight/rotational mass of a larger/heavier wheel/tire combo . . . Which the car has to overcome.

Additional weight put aside, it will only be a bit more in the total scheme of things . . . The 285/35 is approximately 3/16" taller than the stock set-up. The 255/35 is approximately 1/16" shorter than the stock set-up. So, height wise . . . There is really no big difference.

With all of the above said in the equation . . . With the wider combo, I would have to believe that the car is going to handle better in the traction department aka twisties. Any loss in accelleration would be deaf to me, because I don't race around and the difference would be somewhat incremental for me. Hehehe . . . The additional costs of any mod has not stopped anyone from doing so, as such. Likewise, if this works, the additional costs for the wider rubber will not figure into my decision.

Hmmm . . . The stiffer springs in the rear of the '05 6MT with the sport tuned suspension may help avoid any rubbing issues. Worst case scenario, I would need to roll the sheetmetal fender lips at the rear fenders. The question would be . . . Would I need to clear the poly lips on the rear bumper? Interesting, I will have to follow up on this with Chris at F1.

I really appreciate everyones' input. Thanks a bunch!

 

That looks good to me.

Do you know what offsets your wheels are?

 

I don't want to give the impression that I calculated all those numbers by hand.

I used the Miata Tire Size Calculator.



It's a great online tool for calculating tire and wheel size changes. It's better than most tools like this because it also draws an image that shows the relative changes. I didn't originally mention it because I thought most of you would already be using it.

ssk0771 mentioned loss of acceleration due to the diameter of the tires. The 285/35/19 is 0.2" larger in diameter and could lower acceleration a bit because of the larger diameter. A lot of other things enter into the equation for acceleration, though. I suspect a 0.2" increase in tire diameter would not be noticeable to most normal drivers.

 

andy,

whats the height differential between the 245/275 and 25/285 (vs each other, not vs stock setup)? Reason i ask is that i went from 245/275 to 255/285 recently. i do feel like the car rides higher.

its a good thing thou. i think i might be able to clear my driveway with my veilside lip.

 

Jb,

Thanks for that bit of info.

Axiochris,

Based on Jb's info and having checked out the Miata Tire Size Calculator numbers . . . The 255/35's would be some 3/16" taller than the 245/35's . . . . The 285/35's would be some 5/16" taller than the 275/35's.

 

Andy,

You already have a lot of great info in here.

I actually just put on my volks with 245/275. I could of gone 255/285, but I would of rubbed, (dsp-9, h-tech's) and I'm not one to roll/cut my fenders. I like both looks, and I went with what I wanted and what worked for me.

The only thing I like more on the 255/285 is the extra rim "protection" they provide.

 

Robbdogg,

That is the other consideration, as well. Thank you for your comments. This is a great place. Lots of helpful people with helpful info.

 

Here are 275/30/20 Toyo T1-R, I know yours is a 35 series and a 19" rim but this should give you the idea of a stretched look.

https://g35driver.com/forums/attachm...8&d=1141622462

 

^^^^ Thanks for posting that pic. Earlier, today, I told Chris to set me up with the 255/285/35 x 19" tire combo. Since I am not planning on lowering my car, he's not sure if the said combo will rub or not. I like the wider look . . . Soooo, if fender rolling is required . . . I'll be rolling.

 

if you dont drop, you wont have to do fender modifications.

but seriously...why the hell wont you drop your car. i preach this over and over again, if you are going to mod your car, fully committ to it. this means if you wants rims, you better have your car dropped first. it just looks retarded when you have wheels and its not lowered.

 

LOL . . . Thanks, all things in their due time. However, I do admire your elevated passion for modding.

 

Have you driven dropped cars before? I live in NYC and I've driven drop cars since my second car 8 yrs ago and always have a body kit , you just need to change your driving style I just don't want to see you with those nice wheels and have that big gap. HTech will give you a decent drop and cheap. If my wife can learn you can def. do it

 

AthenG,

Thank you for those comments. Here's my ultimate plan with regard to this latest phase/mod of my G. First, I get my wheels installed and see what the wheel gap looks like and whether or not I need fender work to accommodate the lumpy n bumpy streets of San Francisco. Second, I will look into a mild drop, which has to accommodate my driveway encounters. Time will tell . . .

 

going onto a stiff driveway you must always go in in an angle to avoid scrapping, I'm sure you're aware of that. Good Luck