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micap
Alfasud
Joined: 14 Mar 2003
Posts: 62
Location: Denmark
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 Posted: Tue Aug 19, 2003 10:26 am Post subject: Tyre pressure |
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What is the correct tyre pressure for my 33? I'm running 195/50-15 tyres.
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/Michael
ex 89 1.7 QV
now 85 1.5 QV with 1.7 engine. |
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Matt Stolton
Alfa Sprint
Joined: 14 Mar 2003
Posts: 233
Location: London
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| Posted: Wed Aug 20, 2003 8:29 am Post subject: Its down to personal preference really.... |
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I liked 30psi on the front, with 26-27psi on the rear. You can try changing the pressures about a bit, to play with the compromise on handling for ride comfort, but I would recomend keeping 2-4 psi difference front to back, with the rear always lower.
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Regards
Matt
Ex Alfa 33 'GTA' (P4 with Knobs On)
Now cruising in a 166 3.2 Ti!! |
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tvatavuk
Gold Cloverleaf
Joined: 13 Mar 2003
Posts: 673
Location: Split, Croatia
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| Posted: Wed Aug 20, 2003 2:56 pm Post subject: Re: Tyre pressure |
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| micap wrote: |
| What is the correct tyre pressure for my 33? I'm running 195/50-15 tyres. |
Correct tyre pressure, depends on many things:
- type and size of tire
- type of road you drive
- type of shocks/spring you run
- driver preference and way he drives (someone like understeer, other oversteer)
- driver comfort
Correct tyre pressure is OK for that driver, when driver knows in critical situation what will car do (react), and how to handle it (counterreact).
I was running on 2.1bar on front and rear on my P4 when I needed comfort but I wasn't going fast- leasure scenice driving.
While for fast driving, it was 2.5-2.3 rear, or f2.5-r2.4up tu r2.5, when there was a lot of things at back of car.
On track (Alfa track days  ) it was 2.8 all over.
Factory prescribes f2.1-r1.8bar, so you can allways start with that preassure and see how car &you will react, and move preassure little by little up.
More pressure to the rear, and the rear will take off more sooner.
Tino
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Tino Vatavuk
Little black dress which replaced Alfa Romeo 33 S 16v Permanent 4 GMo |
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BILL
Alfa Sprint
Joined: 04 May 2003
Posts: 154
Location: TRIPOLIS GREECE
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| Posted: Wed Aug 20, 2003 3:59 pm Post subject: |
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Well i have 185-60-14 on my 1.4 and the presure i put is 30psi in front and 28psi rear and i have a very good handling on almost all situations(fast driving, fast cornering ) 
Remember to check the presure with the tyres cold(not more than 3Km drive) |
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paddy granger
Alfa Sprint
Joined: 12 Aug 2003
Posts: 248
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| Posted: Wed Aug 27, 2003 12:29 pm Post subject: |
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My tyre specialist says 2.2 bar front and back for Michelin Pilot Exalto 195/50's. 2.3 is probably good for heavy loads and high speed use. 2.1 is a bit low I fear as my specialist warned me of serious tyre wear below 2.2 bar.
Mind you, make sure you get them pumped up with a well-calibrated pump, and never check tyre pressure with hot tyres. |
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jmmoss
Alfa Arna
Joined: 21 Jan 2004
Posts: 23
Location: Melbourne
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| Posted: Thu Mar 25, 2004 4:32 am Post subject: |
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| I know this is a late reply, but my Alfa 33 1987 1.5 owners manual says 26 front and 23 rear, and also has a sticker in the glove box with this information and the Alfa 33 logo. It seems very low - the rear tyres at 23 looked too soft so I added 3 psi on to each figure. Not sure why Alfa were recommending this, and with Alfa Dealers often not even knowing there was a model called the 33 nowadays, we probably never will! |
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