{"id":739,"date":"2026-05-05T08:08:27","date_gmt":"2026-05-05T08:08:27","guid":{"rendered":"https:\/\/worldofruprecht.eu\/?p=739"},"modified":"2026-05-05T08:08:27","modified_gmt":"2026-05-05T08:08:27","slug":"bmw-z4-e85-splneny-sen-s-vuni-horciku-a-spaleneho-benzinu","status":"publish","type":"post","link":"https:\/\/worldofruprecht.eu\/?p=739","title":{"rendered":"BMW Z4 (E85): Spln\u011bn\u00fd sen s v\u016fn\u00ed ho\u0159\u010d\u00edku a sp\u00e1len\u00e9ho benz\u00ednu"},"content":{"rendered":"\n

Koup\u00ed BMW Z4 jsem si splnil d\u011btsk\u00fd sen o j\u00edzd\u011b v klasick\u00e9m roadsteru s pl\u00e1t\u011bnou st\u0159echou. Prvn\u00ed generace Z4 (s k\u00f3dov\u00fdm ozna\u010den\u00edm E85; p\u00edsmeno \u201eZ\u201c mimochodem odkazuje na n\u011bmeck\u00e9 Zukunft<\/em>, tedy budoucnost) sj\u00ed\u017ed\u011bla z linek v americk\u00e9m Spartanburgu v letech 2002 a\u017e 2008. Tamn\u00ed d\u011bln\u00edci, kte\u0159\u00ed dnes montuj\u00ed p\u0159ev\u00e1\u017en\u011b ob\u0159\u00ed dvoutunov\u00e1 rodinn\u00e1 SUV, jich tehdy smontovali necel\u00fdch 198 tis\u00edc. Z toho 17 094 p\u0159ipadlo na fantasticky tuh\u00e9, uzav\u0159en\u00e9 kup\u00e9 E86 a pouh\u00fdch 5 070 na Z4M roadster s legend\u00e1rn\u00edm motorem S54 z M3.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

M\u016fj kousek je z konce roku 2006, jedn\u00e1 se tedy u\u017e o vychytan\u00fd facelift (LCI). Srdcem je atmosf\u00e9rick\u00fd \u0159adov\u00fd \u0161estiv\u00e1lec 2,5i s k\u00f3dov\u00fdm ozna\u010den\u00edm N52B25, sp\u00e1rovan\u00fd s klasick\u00fdm \u0161estistup\u0148ov\u00fdm manu\u00e1lem. Prvn\u00ed majitel \u2013 podle vizitky architekt miluj\u00edc\u00ed golf, jeho\u017e navigace znala zpam\u011bti snad ka\u017ed\u00fd green v okruhu tis\u00edce mil od n\u011bmeck\u00e9ho Wormsu \u2013 si na\u0161t\u011bst\u00ed m\u00edsto titanov\u00fdch hol\u00ed p\u0159iplatil za M podvozek (co\u017e znamen\u00e1 o 15 mm ni\u017e\u0161\u00ed sv\u011btlou v\u00fd\u0161ku, tu\u017e\u0161\u00ed pru\u017einy a siln\u011bj\u0161\u00ed stabiliz\u00e1tory), M kola a par\u00e1dn\u00ed M sportovn\u00ed seda\u010dky. Ud\u011blal zatracen\u011b dob\u0159e. Auto na\u0161t\u011bst\u00ed uniklo jak\u00e9mukoliv pochybn\u00e9mu tuningov\u00e9mu z\u00e1sahu, tak\u017ee se z n\u011bj nestala pou\u0165ov\u00e1 atrakce. V\u0161e je v p\u016fvodn\u00edm, pe\u010dliv\u011b udr\u017eovan\u00e9m stavu. S\u00e1m jsem po vhodn\u00e9m kousku p\u00e1tral p\u016fl roku a prolezl jsem spoustu nale\u0161t\u011bn\u00fdch poj\u00edzdn\u00fdch h\u0159bitov\u016f, ne\u017e jsem na\u0161el ten prav\u00fd.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Technologick\u00fd klenot z ho\u0159\u010d\u00edku<\/h4>\n\n\n\n

Pod dlouhou kapotou d\u0159\u00edm\u00e1 motor\u00e1\u0159sk\u00fd klenot sv\u00e9 doby. Agreg\u00e1t N52 je unik\u00e1tn\u00ed sv\u00fdm kompozitn\u00edm blokem. Vnit\u0159n\u00ed vlo\u017eka v\u00e1lc\u016f a chladic\u00ed kan\u00e1lky jsou z hlin\u00edkov\u00e9 slitiny (Alusil), zat\u00edmco vn\u011bj\u0161\u00ed pl\u00e1\u0161\u0165 bloku tvo\u0159\u00ed extr\u00e9mn\u011b lehk\u00fd ho\u0159\u010d\u00edk. D\u00edky t\u00e9to alchymii samotn\u00fd motor v\u00e1\u017e\u00ed fascinuj\u00edc\u00edch 161 kg. Aby BMW u\u0161et\u0159ilo ka\u017ed\u00fd gram z\u00e1t\u011b\u017ee a sn\u00ed\u017eilo parazitn\u00ed ztr\u00e1ty, vybavilo motor pln\u011b elektrickou vodn\u00ed pumpou (ta sice ob\u010das kolem 150 tis\u00edc kilometr\u016f um\u00edr\u00e1 bez varov\u00e1n\u00ed, ale \u0161et\u0159\u00ed zhruba 1,2 kW v\u00fdkonu). D\u00e1le motor disponuje syst\u00e9mem Valvetronic (plynul\u00e1 zm\u011bna zdvihu sac\u00edch ventil\u016f, d\u00edky kter\u00e9 motor vlastn\u011b nepot\u0159ebuje klasickou \u0161krtic\u00ed klapku k \u0159\u00edzen\u00ed z\u00e1t\u011b\u017ee) a dvojit\u00fdm VANOSem pro variabiln\u00ed \u010dasov\u00e1n\u00ed.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

V\u00fdkon 130 kW (177 kon\u00ed) a to\u010div\u00fd moment 230 Nm mo\u017en\u00e1 na pap\u00ed\u0159e, po boku p\u0159epl\u0148ovan\u00fdch t\u0159\u00edv\u00e1lc\u016f, nevypadaj\u00ed jako specifikace na trh\u00e1n\u00ed asfaltu, ale zd\u00e1n\u00ed hrub\u011b klame. Line\u00e1rn\u00ed gradace v\u00fdkonu a\u017e k 7000 ot\u00e1\u010dk\u00e1m za minutu m\u00e1 nezam\u011bniteln\u00e9 kouzlo. D\u00edky bleskov\u00e9 reakci na elektronick\u00fd plyn a absolutn\u00ed absenci turbo-lagu je z\u00e1\u017eitek z j\u00edzdy chirurgicky p\u0159esn\u00fd. Kr\u00e1tce poskl\u00e1dan\u00e1 \u0161estistup\u0148ov\u00e1 p\u0159evodovka je na zakroucen\u00e9 okresky jak d\u011blan\u00e1. Fyziku sice neo\u0161id\u00edte, kompromis je to ale v\u00edc ne\u017e slu\u0161n\u00fd \u2013 plynul\u00e1 defenzivn\u00ed j\u00edzda znamen\u00e1 spot\u0159ebu kolem 8 litr\u016f. Kdy\u017e za\u010dnete ho\u0159\u010d\u00edkov\u00fd blok \u017ed\u00edmat na maximum, jste na 10 a v\u00fd\u0161.<\/p>\n\n\n\n

Posun do jin\u00e9 dimenze<\/h4>\n\n\n\n

Roadster E85 pochopiteln\u011b nen\u00ed od p\u0159\u00edrody vylo\u017een\u00fd okruhov\u00fd speci\u00e1l, ob\u010dasn\u00fd trackday ale snese bez protest\u016f. M podvozek na kvalitn\u00edch lepiv\u00fdch pneu posouv\u00e1 limity mechanick\u00e9 trakce tak daleko, \u017ee za volantem pravd\u011bpodobn\u011b vym\u011bknete d\u0159\u00edv ne\u017e auto. Na rozd\u00edl od star\u0161\u00edch bavor\u00e1k\u016f a vrcholn\u00e9 verze Z4M m\u00e1 tahle b\u011b\u017en\u00e1 generace u\u017e elektrick\u00fd posilova\u010d \u0159\u00edzen\u00ed (EPS). Nen\u00ed to sice \u010dist\u00e1 telepatick\u00e1 hydraulika, ale na rychl\u00e9 p\u0159ekl\u00e1p\u011bn\u00ed v serpentin\u00e1ch bohat\u011b sta\u010d\u00ed. Karoserie se nav\u00edc p\u0159ekvapiv\u011b nekrout\u00ed a z podvozku se neoz\u00fdvaj\u00ed \u017e\u00e1dn\u00e9 pazvuky, za co\u017e BMW vd\u011b\u010d\u00ed masivn\u00edm v\u00fdztuh\u00e1m podvozku od p\u0159edn\u00ed n\u00e1pravy a\u017e za sedadla.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Design, na kter\u00e9m pracoval Anders Warming pod veden\u00edm kontroverzn\u00edho Chrise Banglea (slavn\u00fd styl zvan\u00fd \u201eflame surfacing\u201c), u\u017e nebud\u00ed takov\u00e9 v\u00e1\u0161n\u011b jako p\u0159i sv\u00e9m p\u0159edstaven\u00ed a naopak skv\u011ble uzr\u00e1l. Nekone\u010dn\u00e1 p\u0159edn\u00ed kapota vypad\u00e1 majest\u00e1tn\u011b, a kdy\u017e ji otev\u0159ete, pochop\u00edte ten trik. \u0158adov\u00fd \u0161estiv\u00e1lec je doslova nacpan\u00fd hluboko za p\u0159edn\u00ed n\u00e1pravou (tzv. front-mid engine layout) kv\u016fli ide\u00e1ln\u00edmu rozlo\u017een\u00ed hmotnosti 50:50. D\u00edky tomu sed\u00edte prakticky p\u0159\u00edmo na zadn\u00ed n\u00e1prav\u011b, zadkem jen p\u00e1r centimetr\u016f nad asfaltem. Tenhle \u201eposun do jin\u00e9 dimenze\u201c znamen\u00e1, \u017ee rotaci auta v zat\u00e1\u010dce c\u00edt\u00edte doslova cel\u00fdm t\u011blem, jakoby se auto ot\u00e1\u010delo kolem va\u0161ich bok\u016f. Majitel\u00e9 t\u011b\u017ek\u00fdch p\u0159edokolek tenhle pocit neznaj\u00ed a nikdy nepoznaj\u00ed.<\/p>\n\n\n\n

\u017divot s digit\u00e1ln\u00ed fosili\u00ed<\/h4>\n\n\n\n

P\u0159\u00edplatkov\u00e9 M seda\u010dky v\u00e1s v zat\u00e1\u010dk\u00e1ch sev\u0159ou jak sv\u011br\u00e1k \u2013 tedy za p\u0159edpokladu, \u017ee va\u0161e BMI nevykazuje hodnoty roze\u017eran\u00e9ho medv\u011bda. Nastupov\u00e1n\u00ed p\u0159es \u0161irok\u00fd pr\u00e1h zkr\u00e1tka vy\u017eaduje zdrav\u00e1 z\u00e1da a nepat\u0159\u00ed mezi discipl\u00edny pro gau\u010dov\u00e9 povale\u010de. Sou\u017eit\u00ed se Z4 je ale jinak p\u0159ekvapiv\u011b civilizovan\u00e9. Topen\u00ed nab\u00edh\u00e1 bleskov\u011b a d\u00edky chytr\u00e9 aerodynamice nejsou turbulence v kabin\u011b nijak stra\u0161n\u00e9. Sta\u010d\u00ed si pustit v\u00fdh\u0159ev sedadel, nastavit v\u00fddechy ventilace a m\u016f\u017eete jezdit \u201enaho\u0159e bez\u201c i v deseti stupn\u00edch. P\u0159ekvapiv\u011b praktick\u00fd je i kufr. <\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

A te\u010f to v\u011b\u010dn\u00e9 dilema: sta\u010d\u00ed men\u0161\u00ed 2,5litr k bla\u017een\u00e9mu \u00fasm\u011bvu v Alp\u00e1ch? Purist\u00e9 v\u00e1m samoz\u0159ejm\u011b \u0159eknou, \u017ee cokoli pod plnotu\u010dn\u00fd t\u0159\u00edlitr 3.0si (195 kW) je trapas. Jist\u011b, t\u0159\u00edlitr trh\u00e1 krky ochotn\u011bji, ale 130 kW na koch\u00e1n\u00ed a svi\u017en\u00e9 pr\u016fjezdy s otev\u0159enou st\u0159echou bez probl\u00e9mu sta\u010d\u00ed. Hlavn\u00ed bonus je toti\u017e akustick\u00fd. Mechanick\u00fd, kovov\u00fd \u0159ev to\u010div\u00e9ho \u0159adov\u00e9ho \u0161estiv\u00e1lce je dnes, v dob\u011b um\u011bl\u00fdch zvuk\u016f z reproduktor\u016f, doslova balz\u00e1m na du\u0161i. A pr\u00e1v\u011b tento ryz\u00ed projev utv\u00e1\u0159\u00ed celkov\u00fd z\u00e1\u017eitek z auta.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Interi\u00e9r je klasicky mnichovsky stroh\u00fd, orientovan\u00fd striktn\u011b na \u0159idi\u010de. Chlad vyza\u0159uje hlavn\u011b z precizn\u011b opracovan\u00e9ho brou\u0161en\u00e9ho hlin\u00edku t\u00e1hnouc\u00edho se nap\u0159\u00ed\u010d palubn\u00ed deskou. Kvalita mont\u00e1\u017ee a sl\u00edcov\u00e1n\u00ed jsou p\u0159\u00edkladn\u00e9. Co m\u011b vylo\u017een\u011b irituje? Typick\u00e9 oran\u017eovo-\u010derven\u00e9 BMW podsv\u00edcen\u00ed bud\u00edk\u016f. Letit\u00fd m\u00fdtus tvrd\u00ed, \u017ee vlnov\u00e1 d\u00e9lka p\u0159esn\u011b 605 nanometr\u016f nenaru\u0161uje no\u010dn\u00ed vid\u011bn\u00ed a pou\u017e\u00edv\u00e1 se proto v letectv\u00ed (co\u017e je technicky korektn\u00ed a pravda), pohled na to je ale prost\u011b zlo. Hor\u0161\u00ed je snad u\u017e jen vypalova\u010dka o\u010d\u00ed v podob\u011b modr\u00e9 od VW. A pak ta prehistorick\u00e1 MK4 navigace. Jej\u00ed pixelov\u00e1 grafika a ovl\u00e1d\u00e1n\u00ed jsou zkr\u00e1tka da\u0148 za to, \u017ee sed\u00edte v digit\u00e1ln\u00ed fosilii z po\u010d\u00e1tku tis\u00edcilet\u00ed. Zvukov\u00fd syst\u00e9m s osmi reproduktory a zesilova\u010dem ale hraje na pom\u011bry roadsteru solidn\u011b. Odkl\u00e1dac\u00ed prostory v kabin\u011b prakticky neexistuj\u00ed, zavazadeln\u00edk o re\u00e1ln\u00e9m objemu 260 litr\u016f to ale spolehliv\u011b zachra\u0148uje. Elektrohydraulick\u00e1 pl\u00e1t\u011bn\u00e1 st\u0159echa se slo\u017e\u00ed do vyhrazen\u00e9ho kastl\u00edku hned za sedadly za \u00factyhodn\u00fdch 10 a\u017e 12 sekund, a co je nejlep\u0161\u00ed \u2013 na rozd\u00edl od pevn\u00fdch skl\u00e1dac\u00edch st\u0159ech v\u00e1s neokrade o ve\u0161ker\u00e9 m\u00edsto v kufru.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Celkov\u00e1 ergonomie je uk\u00e1zkov\u00e1. Posed proklat\u011b n\u00edzko, volant s tlust\u00fdm v\u011bncem, nikde nic netla\u010d\u00ed a kr\u00e1tk\u00e1 \u0159adi\u010dka je p\u0159esn\u011b tam, kam v\u00e1m p\u0159irozen\u011b spadne ruka. Probl\u00e9m tu budou m\u00edt opravdu jen dvoumetrov\u00ed dlouh\u00e1ni. Z4 s N52 motorem m\u00e1 vz\u00e1cn\u00fd dar \u2013 um\u00ed v\u00e1s kr\u00e1lovsky bavit po celou dobu j\u00edzdy \u010dist\u011b skrze p\u0159esn\u00fd podvozek a mechanickou odezvu, nikoliv jen tup\u00fdm dosahov\u00e1n\u00edm neleg\u00e1ln\u00edch rychlost\u00ed v p\u0159\u00edmce.<\/p>\n\n\n\n

\n\n\n\n

Souhrn parametr\u016f: BMW Z4 2.5i (E85 LCI)<\/h3>\n\n\n\n
Parametr<\/strong><\/td>Specifikace<\/strong><\/td><\/tr><\/thead>
Motor<\/strong><\/td>N52B25, atmosf\u00e9rick\u00fd \u0159adov\u00fd \u0161estiv\u00e1lec, ulo\u017een\u00fd vp\u0159edu pod\u00e9ln\u011b za n\u00e1pravou<\/td><\/tr>
Materi\u00e1l bloku<\/strong><\/td>Kompozit (ho\u0159\u010d\u00edkov\u00fd pl\u00e1\u0161\u0165, hlin\u00edkov\u00e9 j\u00e1dro Alusil)<\/td><\/tr>
Rozvod \/ ventily<\/strong><\/td>DOHC, 24 ventil\u016f, Valvetronic, Double-VANOS<\/td><\/tr>
Zdvihov\u00fd objem<\/strong><\/td>2 497 cm\u00b3<\/td><\/tr>
V\u00fdkon<\/strong><\/td>130 kW (177 kon\u00ed) p\u0159i 5 800 ot.\/min<\/td><\/tr>
To\u010div\u00fd moment<\/strong><\/td>230 Nm p\u0159i 3 500 \u2013 5 000 ot.\/min<\/td><\/tr>
Pohotovostn\u00ed hmotnost<\/strong><\/td>1 360 kg (dle v\u00fdbavy)<\/td><\/tr>
Rozlo\u017een\u00ed hmotnosti<\/strong><\/td>T\u00e9m\u011b\u0159 ide\u00e1ln\u00edch 50:50<\/td><\/tr>
Zrychlen\u00ed 0\u2013100 km\/h<\/strong><\/td>7,1 s<\/td><\/tr>
Maxim\u00e1ln\u00ed rychlost<\/strong><\/td>229 km\/h<\/td><\/tr>
P\u0159evodovka<\/strong><\/td>6stup\u0148ov\u00e1 manu\u00e1ln\u00ed<\/td><\/tr>
Objem zavazadlov\u00e9ho prostoru<\/strong><\/td>260 litr\u016f <\/td><\/tr>
Mechanismus st\u0159echy<\/strong><\/td>Elektrohydraulick\u00fd (pln\u011b automatick\u00fd, slo\u017een\u00ed cca 10-12 s)<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"

Koup\u00ed BMW Z4 jsem si splnil d\u011btsk\u00fd sen o j\u00edzd\u011b v klasick\u00e9m roadsteru s pl\u00e1t\u011bnou st\u0159echou. Prvn\u00ed generace Z4 (s k\u00f3dov\u00fdm ozna\u010den\u00edm E85; p\u00edsmeno \u201eZ\u201c mimochodem odkazuje na n\u011bmeck\u00e9 Zukunft, tedy budoucnost) sj\u00ed\u017ed\u011bla z linek v americk\u00e9m Spartanburgu v letech 2002 a\u017e 2008. Tamn\u00ed d\u011bln\u00edci, kte\u0159\u00ed dnes montuj\u00ed p\u0159ev\u00e1\u017en\u011b ob\u0159\u00ed dvoutunov\u00e1 rodinn\u00e1 SUV, jich tehdy … \u010c\u00edst d\u00e1l<\/a><\/p>\n","protected":false},"author":1,"featured_media":742,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[255],"tags":[257,259,256,258],"class_list":["post-739","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-z4","tag-bmw-n52-motor","tag-bmw-recenze-zkusenosti","tag-bmw-z4-e85","tag-klasicky-roadster"],"_links":{"self":[{"href":"https:\/\/worldofruprecht.eu\/index.php?rest_route=\/wp\/v2\/posts\/739","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/worldofruprecht.eu\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/worldofruprecht.eu\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/worldofruprecht.eu\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/worldofruprecht.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=739"}],"version-history":[{"count":2,"href":"https:\/\/worldofruprecht.eu\/index.php?rest_route=\/wp\/v2\/posts\/739\/revisions"}],"predecessor-version":[{"id":749,"href":"https:\/\/worldofruprecht.eu\/index.php?rest_route=\/wp\/v2\/posts\/739\/revisions\/749"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/worldofruprecht.eu\/index.php?rest_route=\/wp\/v2\/media\/742"}],"wp:attachment":[{"href":"https:\/\/worldofruprecht.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=739"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/worldofruprecht.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=739"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/worldofruprecht.eu\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=739"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}