Oil changes

[mtrans]

If you need calculator for tires here it`s http://www.internet-prodaja-guma.com/pages.php?pageid=12
Perhaps no need for translation.Best

[8v-of-fury]

English site, with visual!

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

[R.O.R-2.0]

our cars call for 175/70/13's...

my car has 185/70/14's on it, they are about 3" taller than stock size. and about 2 inches wider..

No way.

175/70/13-

-sidewall 4.8"
-radius 11.3"
-diameter 22.6"
-circum 71.1"
-revs/mile 891

185/70/14

-sidewall 5.1"
-radius 12.1
-diam 24.2"
-circum 76"
revs/mile 834

Your tire is only 1.8" taller, and half inch wider.. where'd you get 2"?? that'd be the difference between a 175 and a 225  . Also when your speedo reads 60, your actually doing 64.1. %6.8 too slow.

DieselBalz, Keep it under a 225 tire.. and I think you'll alright.. There is negligible difference between a 155 and 185 even.. Don't sweat it. If your really worried about the tires being your biggest drawback, get some of those hyper-mileage tires

dude, i got pulled over the other day, speedo was dead nuts @ 55 mph.. cop radar'd me at 63..

dug my GPS out the next day, and sure enough, she was not lying, i really do go 63 mph @ 55 on the speedo..

and my 185/70s rub on my mk2.. like rub good enough to mess the arches up..

im just letting the dude know what hes in for is all..

i thought my 205/40/17s were tall on a mk2, until i stood one of my 185s up next to it last night.. my 185s are still an inch taller than a 205/40

and how could you say that there is little difference between a 155 and a 185 tire? thats a very false statement for sure.

like Lucas already stated, best mileage, and worst ride are to be had with 155/80 tires..

wider tires on a VW really do take mileage away.. ive experimented with LOTS of different tire sizes.. the best ecno tires are 155s and 165s..

had 165/80 snow tires on my GTI, and it would do 30 mpg all the time around home. then i switched to some 185/70 road tires, and my mileage dropped to 27 mpg, no matter how much i babied it..

and the power difference from a narrow tire, to a wide tire, is un believeable..

i can barely catch traction with my 155/80s on my rabbit.. but it hardly gets out of its own way with 205/40/17's on it.. definitely a noticeable difference in power.

look, you guys all have your own agendas, and ways of doing things, but im just saying that by my standards, 185/70s and anything bigger than that are too big for a VW..

numbers dont lie tho.. plain and simple..

[8v-of-fury]

Truth. Anything under a 195 is A-okay by me.

[R.O.R-2.0]

your prolly running 13" wheels tho.. and a 195 will probably clear with a 13.

but with some offset 14" enkei 92s and some 195's they would rub while turning, and when hitting bumps..

oh yea, i forgot to mention..

my 185/70s rub on the inner fender well when you turn hard over..

like, back by where the rack n pinion goes, it rubs back there on the inner fender..

to me, any tire that rubs, is too big.

[DieselBalz]

I did not go wider, just taller. Lower rpms on the highway is my agenda. It is definitely lower on the tach at desired speed, but I am gonna have to check on the difference on the speedo. I was expecting a difference as one time I put a smaller tire on my F150 and it messed with the speedo. I would go through those little trailers the Sherrif's dept sets up that lets ya know how fast youre going and would be five mph off.

I am assuming that less rpm's mean better fuel mileage. Since I didnt go wider, shouldnt I see a better mph?

[R.O.R-2.0]

if your speedo is correct with 175/70/13s (the specified tire size for most mk2 cars) then its way off (8mph) with the 185/70/14s..

trust me.. my speedo was dead nuts with the old tires on the car, now its 8mph off. was with my GTI also, same with the rabbit when they were on it.

idk how you wouldnt have the same 8mph deficit as i do..

no, i really doubt you are going to see any mileage GAINS from bigger tires.

[blackbird82]

Yeah, I feel the difference with my 17's on. No more wheel spin, at all!

CLutch will slip before my yokohama's do.

So I'm thinking, need a new clutch.

Acceleration is down a lil bit, but my highway momentum and passing power is up actually.

Cruises easier at 125 kmph.  I use my boost gauge as a load indicator. 

Truth be told I did get my best tanks when I rolled with my 185/65R14's, but I hated the handling.
I pulled three tanks of 940, 925,985 with those tires. So I do lose 100K per tank
But all in all, good balance!
and the car is gonna roll 600,000k so it doesn't owe me anything!

[R.O.R-2.0]

Yeah, I feel the difference with my 17's on. No more wheel spin, at all!

CLutch will slip before my yokohama's do.

So I'm thinking, need a new clutch.

Acceleration is down a lil bit, but my highway momentum and passing power is up actually.

Cruises easier at 125 kmph.  I use my boost gauge as a load indicator. 

Truth be told I did get my best tanks when I rolled with my 185/65R14's, but I hated the handling.
I pulled three tanks of 940, 925,985 with those tires. So I do lose 100K per tank
But all in all, good balance!
and the car is gonna roll 600,000k so it doesn't owe me anything!

yea, my diesel, with a good clutch, will barely burn my 17s.. its just a dog..

but with the stock rabbit wheels, and tiny snow tires, it just frys the tires off, basically without even trying.

[blackbird82]

I will have to try that. Even living in Kanada! I have never bought snow tires.

[R.O.R-2.0]

I will have to try that. Even living in Kanada! I have never bought snow tires.

i didnt buy them, but when i bought my car, it was summer time, and the car came with studs, so my first order of business was to de-stud the tires. after that, i drove it with those tires for a while.. they really work good in the snow even without studs..

[Patrick]

I run 195/60 15's on BBs rims on a late mk2 jetta. No clearance problems, and 972 kms on the last tank. The AAZ twisted up too.

[nathan_b]

you know with big tires mileage reads high, right? when I had 15s on corrado steelies on my caddy, it was nearly 60 miles per tank wrong.

[81 vw pu]

Rim size is not a factor, its the overall diameter of the tires that changes your gear ratio.

[R.O.R-2.0]

Rim size is not a factor, its the overall diameter of the tires that changes your gear ratio.

a 185/70/13 is most definitely smaller than a 185/70/14..