AdBlock Warning

Parts of this website do not function properly with AdBlock enabled on your device. To get the best user experience on our website, please disable Adblock for this website (domain) on your browser.


br1anstorm

Wheel and tyre-size options for IS300 Sportcross

Recommended Posts

I need the advice of experts and enthusiasts, in doing something which seems to swim against the tide.

I have a 2002 IS300 Sportcross.  It comes with 17" wheels as standard, with fairly low-profile tyres:  215/45 R17 on the front, 225/45 R17 on the rear. The alloy wheels are scabby and corroded, and the current Michelin Premacy tyres are due for replacement.  So now is the moment!

Most people who change wheels and tyres seem to want bigger wheels and even lower profile tyres.  Fair enough - for appearance and perhaps hard cornering.

I want to go the other way.  I want to fit 16" wheels (I have a set) and deeper profile tyres.  The reason is mainly to improve the ride and reduce vulnerability to bad road surfaces, potholes, and the thumping of cats-eyes.....

So this is where it gets complicated.  What tyres do I fit?  I want to change the rolling-radius as little as possible in order not to affect the speedo and odometer.  I also want decent quality tyres that aren't noisy, wear reasonably well and are good in the wet (I have Falkens on my 4WD and they are horrible when it's slippery).  I plan to put the same size tyres on all four wheels (I don't carry heavy loads in the Sportcross so can't see the justification for slightly wider wheels on the back).

The brilliant guidance on the http://www.carbibles.com website includes a calculator for tyre-size options.  That appears to suggest that I could fit either 50-profile tyres:   215/50 R16 or 225/50 R16,  or if I wanted taller 55-profile ones, 205/55 R16 or 215/55 R16.

So.... first question - what size/profile should I go for?  My instinct was to choose 215/55 R16 all round, but that's a really rare size (I can only find Kumho KH31 in that size).  The manufacturer alternative spec (and standard on the IS200 Sportcross) seems to be 205/55 R16.  What do others think?

Second question..... what brand?  My shortlist is Goodyear Efficient Grip Performance, Dunlop Sport Blu Response, or maybe Hankook or Kumho.  I think Michelins are too costly (I'm not a high mileage driver), and Yokohamas and Bridgestones too soft and wear out quickly.  I have no knowledge of Uniroyal and little experience of Contis (except on an older Merc where they were OEM).

Any thoughts and advice would be appreciated, especially from those in the trade!

Share this post


Link to post
Share on other sites
 

Depending on how wide your new wheels are going to be, I'd suggest 205/55R16. Like you say it's the OEM fitment for an IS supplied with 16" wheels. It's also a very common size, especially when it comes to winter tyres so there ought to be plenty of choice re: brands.

I used to fit a set of RX300 wheels with 205/55R16 tyres during winter months on my old IS200.

IS200-10.thumb.JPG.06d6ed3da39ad5df55de156b448ad31e.JPG

 

Share this post


Link to post
Share on other sites

Thanks John - very helpful.

The set of 16" wheels I plan to use are standard 6 spoke Lexus IS wheels (ie the OEM ones as fitted, I think, to some versions of the IS300).  See attached pic. I can't immediately recall the width - I think they are 6.5" - but they are certainly intended for the OEM 205/55 R16 tyres.  Having now browsed a lot of tyre suppliers online, you're absolutely right that it's a very common size, so lots of choice...

I still have the Goodyears and Dunlops on my shortlist.  But I am now thinking quite seriously about the Michelin Cross Climate.  More costly, but the reviews seem to suggest that it really does deliver in both summer and wet/cold winter conditions, and there is a promotional deal on Michelins this month.  As I'm in the Scottish Highlands, I think it might well be worth trying them (even though I try hard to avoid using my Lexus when there is snow/salt/slush on the roads).

More browsing needed to source the best deal!

 

58dae6f54578a_lexuswheels.thumb.jpg.6c5215b79fc6811bebda2b495c9eb87a.jpg

Share this post


Link to post
Share on other sites

Thanks Steve - that site is very helpful (so I've bookmarked it!)

  • Like 1

Share this post


Link to post
Share on other sites

Update for anyone interested.  I ended up deciding to put 205/55 R16 tyres on all four of those standard Lexus wheels (which are incidentally 6.5" wide).  I chose Goodyear Efficient Grip Performance tyres.  I have just tried them out.  Much quieter, with a much better ride quality, scarcely any thumping over cats-eyes, and the grip and handing both on dry and wet roads feels better than the previous Michelin 45-profiles on 17" wheels.   The change was definitely an improvement and worth doing.

  • Like 1

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

    • By WilliamH
      Had to get a replacement battery in a hurry today for my 2003 IS 300 Sportcross, so went on-line.
      Eurocarparts website was easy to use and had a tasty discount offer. They had a choice of 2 so I selected the more expensive one with 70Ah, CCA 540A, rating and ordered it 'click and collect'. £67.40 inc vat and 3 year g'tee which I didn't think was bad.
      Now I've got it home I can see it doesn't fit the battery tray properly. The base area is too big to fit deep in the tray so it sits quite high. Also, the new battery is 10mm taller than my knackered battery. As a result, the standard battery clamp won't fit (the rods aren't long enough) and the terminals are worryingly close to the closed bonnet.
      Is this a common issue?
      Is there a work around or will I have to return it to eurocarparts?
      Is there a generally recommended/ easily available battery that fits?
      Thanks in advance for your replies!
    • By Ian J. Parsley
      There was a very interesting thread recently on best tyres for an NX. 
      Any thoughts on the CT? Has already done 20k and will likely need to do at least that again. 
    • By Normski
      So her RX sport needs a set of fronts (235/55/19). The Avon ZX7 and the Goodyear Wrangler HP All Seasons caught my eye. Anyone have experience of these? Any preference? She does about 10k a year mainly around town but didn't want to end up being stuck in 1cm of snow IF the winter weather ever came ;)
      Cheers, Noman
    • By bobmc
      Just spotted these for sale on ebay
      http://www.ebay.co.uk/itm/263058132067
      Set of alloys for Is250/is300h, apparently new and unused, London E3 area
      Nothing to do with me, just spotted them. Depending on the reserve, could be a bargain for someone.
       
       

    • By J Henderson
      Having a much-needed clearout. Collection from EH51, or can arrange postage at buyer's expense.
       
      IS200 "Sport" Chrome Tailpipe
      Hard to find genuine item in very good condition. The underside a little pitted but not visible once fitted. Adds a touch of class to any IS200/300 with a stock exhaust system. £20


       
      IS200 Drive Belts
      Full set of Gates drive belts for 1G-FE engine cars - Power-steering, Air-con & Alternator. Brand New, never fitted. £20

       
      HB4/9600 OSRAM Fog Breaker Bulbs
      Colour temperature approx 2600K (Yellow). Brand-new & sealed. Will fit front fogs on '99-'03 1st Gen IS or '05-10 2nd-Gen IS (and possibly others..). £20